Will vouch for the 2101, although it has a couple of potential gotchas:
1. The source switching is routed through relays that - at this age anyway - seem develop problems with passing a clean signal reliably. Only solution is to replace the relays.
2. This is a minor quibble, but it bugs me. The source selection on the C-2101 is done via logic controlled buttons. As such, there is no memory for what was selected prior to power off. Therefore, it defaults to the tuner input being selected at power up every time. Older pre's still used mechanical source selection (rotary or ganged pushbuttons usually) and thus held whatever source was selected unless changed by the user. Like I said, a minor issue but one that I've found annoying.
Aside from that, and the distinctly 80's look (all matte black with gold printing) which isn't bad, but may not be to everyone's liking, it is a very good pre in terms of capabilities and sound quality. And it is still a sleeper in terms of price.
I have mine mated to a B-2101, SE-88 eq and an RA-1000 reverb. Yeah, I know the prevailing opinion on reverb amps, but it's there for looks since it matches this line of components and was part of a pile of gear I got cheap enough that it was worth hanging onto just for the visual spice it adds.