Pl advise on buying the best PDA phone!!?

If you had Sprint as your carrier I would say go with the Touch because I have it and love it and Radio Shack has it for $99.99 after $100 mail in rebate but since you mentioned EDGE I ume you aren't with Sprint so the Nokia E51 is a good choice and very user friendly. The touch has the advantage on size and features but it takes some time to get used to since it is not intuative.