There just happens to be a post about TX vs Dell on the Palm Addicts site now....
http://palmaddict.typepad.com/palmad...ichard_a_.html. But remember it is a Palm site, and there are a lot of people that are very happy with the Dell VGA pdas. On the other hand, a lot of people have expressed concerns that Win Mobile 5 is not yet very stable, and even Alex may have stayed with the previous OS version on his despite the availability of an upgrade for it.
The VGA display is probably pretty spectacular, but I think the hires+ display on the T|X is pretty impressive also. T|X is supposed to be relatively solid and useful, and has non-volatile memory in case your battery dies. The Dell x51v is a really powerful pda, but probably a little more expensive.
Both of them, btw, are well suited for viewing DVDs if you are interested in that also! (You just have to first do a conversion to a compressed format like DivX or XVid first.)