I'm like you, I prefer a "pure" preamp with the least bells & whistles, but ultimately the choice you make comes down to the sound, and not how many add-on's.
I'm pretty happy with my Parasound JC2. The only add-on that you don't need is the Home Theater Bypass. For me the HT bypass is a must have. That actually limits my list of available preamps.
Anyway, good luck with your search.