Used preamps under $500 better than Audiolab 8000C

Yes indeed. The Rotel RC-1070 is a superb choice. It meets all of your criteria (including remote) and is 450-500 new. It is an amazing overachiever. I'd buy new for the 3 yr warranty. I'm using this after having owned an SF Line 1 SE, and a Rowland Consonance. I have no regrets.
Parts quality is pretty good (Rubicon caps, Alps volume etc). And it is smoother than the Audiolab (which I auditioned some time ago).

Try to find Sunfire Symphonic Reference preamp.
It has an excellent phono section, tone controlls, external proccessor terminals(if you want to use an external EQ for instance), high-pass output(an excellent feature for biamplification) and finally it has a great remote as well.

It's out of production but you should find used items within $400.

how does rc 1090 stand up?

Thanks for all your responses...I will look into all 3 of these. Up to now I really haven't considered buying Rotel since all the new stuff is made in China (or so I've heard) but my favorite shop here in chicago is a Rotel dealer so I'm gonna demo the rc-1070 and 1090 this weekend hopefully.

The RC-1090 sounded identical in my system to the RC-1070. I don't use balanced connections. But the 1070 seemed like a better choice to me - it has no digital display circuitry to add noise to the signal. And the circuitry is more simple. The 1070 also offers tone adjustments (defeatable).