I just got a Tecamp 212 speaker cab. What would you all suggest as a head? I don't have to go too crazy in terms of features since my Noble is my sound. Looking at 500 hundred watts in a micro amp. Something I can possibly get for a steal. I know about tonehammers of course!
I've used my Noble directly to the amp through the effects return on my Genzler Magellan MG800, and it sounds fantastic... but, I cannot tell the difference between direct and through the main input with everything flat. Someone out there may be able to in a studio setting, but in a real-world situation I really doubt it. I primarily use the eq on the Noble, but like having quick tweaks available on the amp - and I like the choices in the eq and drive settings that Jeff Genzler's group came up with.
If by "direct" you mean into the effects loop, I noticed a difference between running that way and into the front end of the Magellan. Note: I don't have a Noble, I just ran in using an fDeck HPF3 (mostly as an impedance buffer -- running a passive bass straight into the effects loop didn't work well). Running the fDeck into the front vs. the loop, the loop was noticeably but not radically more open, less colored and, I think, a little less compressed (not positive about the last, but that's how I recall it). The Magellan has a nice (and easy to use) front end, but it does color the sound some. There is also, to my ear, a little tubey something going on with the dynamics in the lows -- nice in many cases, rounds out the sound, fills out a mix, but might not be what you're looking for if you want a straight poweramp. Not sure if that happened when running into the loop or not, and I don't have a Magellan anymore to double check.
500 Watts -- a used Kustom KXB 500 can be had for a steal. It's a 500 Watt micro, but no tubey dynamic processing/limiting going on there, for better or for worse (I happen to like it). Won't have as much juice as the Magellan or as nice a front end or features. If you like headphone practice, the headphone out and aux-in on the Magellan are better.
Straight, small poweramp (non-rack), I'd look at one of the ICE 1000 ASP units built by
@radbass. I have not played one, so can't vouch for one from direct experience, but I have played a similar unit. More oomph than either the Magellan or the Kustom, but it's strictly a poweramp and over your $500 limit. Cheaper than an M700, though.
Quilter Bass Block could be nice if you want something to impart a little of the feel/heft/looser response of a tube amp. I've played one -- it's not a tube amp and doesn't, IME, have quite the feel, detail, clarity, or heft of a good tube amp, but it gets closer to that than any other micro I've tried.
There are more options, but that what I've got ATM.