I am perhaps one of the numbered spectres in guitardom to be paying attention to solidstate amplifiers- the detestable tone generators to the rest of us. I only bothered with the ones that matter tone-wise, in the realms of distortion, of course. I don't quite believe these amps would have any real offerings in terms of cleans, even to sympathizers like me.
I love the Peavey Bandit in all its manifestations (the pic above is its latest design), it's the splendid overdrive- very saturated & heavy. More importantly, it doesn't mud-out.
I thought there was no formidable alternative to the Bandit but until recently (if you deem 2 years ago, recent...) Sound Drive's SG612R did very well to prove just that. I just can't exclude the creamy yet defined overdriven tones on board. Highly recommended.
Randall's Ninja combo is the most affordable on this list (at entry time, it lists for <$250). Let's put aside the Mike Amott influences here (it's his signature amp, anyway...) & hear how good this one is. I just wish the manufacturer would include a reverb option in time to come to make it more expansive, not that it's loathsome as it is. 
The Ibanez TBX range is the revised edition of the manufacturer's TB models. The amplifier has a dual midrange control which is very much its strength in retaining clarity. I would advise you to consider at least the TBX30R if you have your mind set on an Ibanez amplifier, I cant accord positive remarks to the smaller versions simply because of the different overdrive/ distortion tone-to-volume manifestation in use.
Marshall revised their MG series in 2009 (these are now known as the MG4 range). Do they sound much better than their previous incarnations? I'd say they sound more organic, alluding to the manufacturer's tube type voicings rather than being the coarse sounding amplifiers they were known to be. Selected MG models feature minimum on board effects for your tweaking pleasure.
I used to own the Sound Drive 60W solidstate combo amp which sounds very tube-like with lots of warmth & clarity. This is one of those very numbered units which sound very inviting in clean mode as well; the Celestion speaker is largely attributable to this ear candy.
I've been playing my Son of Beast too much recently; it's the novelty of a fresh addition to the line-up but today, I remember my Ironbird Space Face. This was in fact the guitar which got me started with the single pickup captivation. It sounds more aggressive than my SOB in terms of drive, the reason I still keep the default pickup in there. The neck profile is a ready rival to Ibanez's Super Wizard. I simply love this one.
This was my play set-up last night; decided to plug my Black Coffee into the Tube7. The BC has no distortion control so what was heard was ful- on distortion coupled with a drive kick from my Coolcat Transparent Overdrive. Also, the overall tone was scoop-inclined as the BC only has treble/bass controls on board.
To many Gibson purists, it's desecration to plug in the iconic Les Paul into a solidstate amp but I prefer doing this because my Sound Drive amp helps to maintain single note clarity from a deep sounding guitar like the LP. In addition to this, the amp also retains the low end growl so in its entirety, it's a good sounding tone regardless if there are no tubes in there.
Here're my amps to date. I did not regret buying the Killer Ant as it sounds great both clean & driven. How different is it compared to my TUBE7? It has an attenuated output (if it doesn't, it sure as heck sounds like it) which has a saturated output that I like to hear.
...or a new amp, should you have a sizeable amount of cash & would like to 'upgrade'?
My newly acquired SZR520 & my Sound Drive amp made last weekend enjoyable. I'm still having a hard time accepting the SZR's outline; it looks retarded but this is something personal, to be fair to the instrument. The overall tone churned out by the above combination is very pleasing especially when I'm one who is distortion inclined & particular with single note definition.
Just finished playing the set-up above. Sound Drive & Biyang are relative unknowns but good does not necessarily equals boutique. However, the good are most of the time well-known because reputation breeds mentioning.
These two friends are currently very impressive implements: Sound Drive's Tube 7 head & Biyang's Metal End King. It seems that, for a spectacular distorted output to happen, tube cleans would 
If you are a keen Sound Drive fan because you are privy of its wholesome tube-like tone, be informed that the manufacturer would cease colaboration with Celestion drivers as evident with the latest SG100R manifestation (Ceestion-less). However, you can still acquire the Celestion equipped units from Standard Value as they are still in stock (limited qty).
Fans of great solidstate tone, be informed that the more affordable version of the superb SG100R amp is now in stock @ Standard Value. Why more affordable? This model features a pair of non-Celestion speakers.
