Windows Phone Thoughts: Windows Mobile Community Advice Question

I'm a big believer in the wisdom of crowds - well, except when they're angry and carrying pitchforks and/or torches - so I wanted to put this question that I received to the community at large:

"Hi, Jason, I've had my T-Mobile MDA for 3 yrs., the logest I have ever had a PDA. I once was sold on the HTC TyTN II and the Xperia X1, but reading users' comments about cracking and being discontinued, I just don't know where to head. I looked over the T-Mobile G1, loved the sleek design, touch-screen,etc. but I am afraid I'd lose too much with the Android OS. I have Bibles and ebooks I read from daily. I am currently on weight watchers and found a perfect Point Calculator. I'm afraid I'd lose all my apps like that, not to mention Wor, Excel and Power Point. Here is what I am looking for 400 Mhz, 256 MB, GPS (would really like voice navigation.) Does any such animal exist? What, in your opinion, is the best out there today."

Weigh in with your opinions Pocket PC Thoughts readers! What would you suggest for this person?