Think the bottom line is walk into a shop and try them all out, see which one fits for you.
Lets get one thing clear - Apple Microsoft , Samsung, Nokia, Google, Blackberry etc etc they are all massive corporations with just 1 thing on their agenda - to make money.
While doing this they idealy love to have your personal info and shopping preferences this helps them to build a picture of you and target sales crap or sell it on and make more money from you!
All the comments about one phone or manufacturer are subjective to each users experience with 1 specific handset. I loved Motorolas before they shipped their manufacturing out to china and quality went p*** poor, they broke easily so tried Samsung.
Samsung have good technology well made units but p*** poor software - I mean its like trying to figure out Reverse Polish Arithmatic in Korean!!
Had the Samsung Omnia i900 when it came out - it piddles on the Iphone in so many ways and I ahem modified mine easily but when I got the wonderphone it was like driving a crappy Micra and suddenly I have the keys to a GTR!!
Yes the wonderphone is over marketed, priced and hyped but the build and interface is just superb. The tech is'nt as good as the Omnia in some ways i.e the camera is bobins by comparision and everything is locked down but again it can be cracked and you have all the freebees for it.
It will always be about the overall cost against functionality.
Good luck with your search - remember they are all the same and the money is made on the payment plan more than the handset.
If its just money get a pay as you go generic brand handset from Asda for £20 and use their plan for peanuts