PDA vs. Smartphone

I've been wanting to get a pocket PC or PDA for some time know and the more I look the more I can't find them. I would be more comfortable with one of those devices but find them hard to find because they are being pushed out by the smartphones. Each device basically does the same thing except for the smartphone that is abviously a phone as well. I hope I can still find a PDA or pocket PC in the near future because I couldn't see myself using a smartphone for more than it's PDA capabilities and it would also be awkward to hold as a phone. I guess I'll just have to keep doing my research.