You may have to go with the Multi-Watt then Silverwulf. From what you've written it seems like the best amp for you in Mesa's current lineup. The only amp I'd consider you to check out otherwise would be the Royal Atlantic. Perhaps you should wait for that amp to hit stores. I think the Mark V will probably be too compressed for your rhythmic needs if you want lots of presence and hair on your chords. Its also a different amp in that it is very, very tight and not as big sounding as the Rectos for rhythm guitar passages.
I know that you can get some more presence going with channel 4 on the Roadster, but it definitely won't get you that classic Dual Recto buzz that many like.