Hey guys,
I figured I'd add my opinion too. I've owned my Mark IIC (not +) for almost 20 years, my Mark IV for about 5 years, and bought a Mark III Blue Stripe last night (
). I've also owned my Triaxis for about 10 years. All of my Marks are combos with an EV.
Mark IIC - this amp kills just about everything for rock and mellower. It's not great for metal, and is also a little too tight for nice chugging rhythm (ala Marshall). But, the clean channel is excellent - nice and Fendery, bright and lively. The Lead channel is the best I've ever played for solos. It's aggressive and notes cut through the mix very well. It's also hamronically rich and sustains perfectly. I will never sell this amp, nor get the + upgrade. It's perfect as is.
Mark IV - very versital and a great live amp -awesome footswitching. The clean doesn't really do it for me - kind of bland and not chimey enough for my taste, especially when compared to my MarkC. Channel 2 is my favorite - nice vintage Marshally type of crunck. Sounds great for calssic rock and even better with a nice distortion pedal. The lead channel is good and sustains well, but I find it a little dark and a little bland too. It can get heavy, so it can work well for metal, but as you can probably tell, I'm not really into that style. The lead on the C has less gain than the lead on the IV, but is more hrmonically rich. The lead on my C is much better IMO.
Mark III blue stripe - as I mentioned, I just picked it up last night (deal I couldn't pass on). Although I only plyed it for an hour, I'm impressed with this amp. The clean is very good - similar to my Mark IIC. The crunch channel is pretty good too as is the Lead channel. The amp seems to be a tonality cross between the II and IV, which makes sense. I did not find the amp thin or buzzy at all. The only time I found it to get buzzy was when the presence is turned up high. I was usrprised, because a while back, I played in a band with a guy that had a Mark III and he had a buzzy and thin tone - so maybe it was a different "stripe" model. He also could have had the presence cranked, or it could also have been his guitar. The only negative I have right now is the shared volume control for the rhythm2 & Lead channels.I don't think it'll be that big of a deal, though.
To sum up, I think all the amps are very nice. Each sound similar (classic Mesa Mark mid-rangy tone & good sustain), but each one has a slightly different flavor of tone. For overall tone, I think the IIC and III win over the IV. But for versatility and features, the IV wins.
You really can't go wrong with any of them. :lol: