What is a good PDA for money?

I narrowed down my choices to the phones below that I was looking at,
HTC Tytn 2 or iPhone 3g or wait for HTC Touch Diamond Pro. So which one is good, help me Choose!!!!!!!!!

Tytn2
Pros
- 3mp cam
- Features
- Keyboard
Cons
- I read some reviews on Tytn2 and seems that it has some driver issue, but no idea if that really matters.
- Physical Size, hard to fit in pocket.

iPhone 3G
Pros
- Excellent UI
- Physical Size is small enough to fit in a pocket
- Plus iPod software
- Full Touch Controlling
Cons
- Worst camera ever
- No copy and paste
- Cannot do 'Mark All as Read' to my 30 unread emails

Touch Diamond pro
Pros
- Love the physical Design
- Excellent UI with TouchFlo 3D Software
- Windows mobile therefore tonnes of software to download
- Camera
Cons
- Slow interface using touchflo
- Lot of figerprint smudges on screen

So... what do you think i should get... Suggestions welcomed..

Yh i had a check on the Omnia and complains starting to flood in about its slow interface. Watched a few youtube videos on it too and it proves it. Tytn 2 is qite tempting but came across a video driver issue in it couple of days ago which made it have problems like slow scrolling on pages, and laggy movement in graphical applications. My best bet right now is on Touch diamond pro, fingers crossed on prices lol.