I too have a Desire... i'm buying an xe sim free.. I'll get at least £100 for the desire even if i recycle it...
This is very true. Even though I have a sensation sitting on my desk I always come back to the mytouch 4g.My advice is to get a phone that YOU want to get. You will not gain anything by waiting for a better model to arrive, as that better model will be in the same position the Sensation is, within 4 months of its release. Don't buy into the whole hi-end/lo-end **** as it won't last. And who the hell needs a quad-core phone with more than 1GB of RAM? Get a TABLET if you want a mini-computer. We're talking phones here...
Just find a design that you like, with the specs your require from the phone and buy it. Screw the rest.