the best thing about wycontacts for ROM devs is that it's easy to customize. Dialer background, digit color, etc...
It is lacking in a few places, though. No T9 dialing is pretty annoying, and you can't link contacts, which drives my OCD crazy. I hate not having contact pictures for everyone. I want to sync all of my facebook friends to the contacts, and then link my existing contacts to their facebook accounts, which I can't do. And then I want to be able to only show contacts with phone numbers. Thus having all of my contacts with number also have facebook info/email info.
But alas, I love the transparent background so I guess I'll survive... If anyone has an idea for how I can achieve the facebook pics thing and only show contacts with phone numbers, I'd be pretty happy.
NOTE: I have tried having facebook only sync with my phone contacts. But naturally my mom's name isn't "mom" on facebook, and instances like that come up a whole bunch so they never get synced.