I can guarantee that O2 will never offer the 128mb RAM model as this is retro fitted by PPCTechs in the States, the old RAM chips are destroyed and the new ones fitted. HTC have no intention of releasing a 128mb native version of this model (unless they decide to make a Magician2/Jam2 which will probably have wifi too) and the process also invalidates the manufacturers warranty.
I have had the T-Mobile MDA compact since February, brilliant phone! Complete git to use one handed i find though, and a bit impractical for taking out, but my old SPV C500 fills in those duties

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