My vote...build your own. You can build a preamp that is as good as or better than anything commercially available, because you can build it exactly how you want it to be, using top-notch components, and you don't have to worry about the commercial aspects that manufacturers fret over.
Use a directly heated triode tube like a 26, with DC regulated filaments...heavenly sounding.
An added benefit is the satisfaction of listening to music through your own creation. Sure there's a learning curve, but that's part of the fun! With the DIY audio sites around these days anyone (and I mean anyone) can learn rather quickly how to build tube gear, for not a lot of money (unless you want to it be!). What's harder is making it good sounding AND good looking, but that comes with time, too.
Just my 2 cents.