Which among this is best android phone lg gt540, xperia x8, or Motorola quench, based on personal experience?

which among this is best android phone lg gt540, xperia x8, or Motorola quench, based on personal experience, i need a phone with at least with 3" or more display n cheapest and easily available in market with good performance so i picked these LG GT 540 optimus, sonyericsson xperia X8, Motorola Quench, has all these have some what same hardware and features still which 1 would u recommend me, among these, based on personal experience tell me positive as well as negative experiences, thanks in advance