I personally think this is worth the extra £100 over the Optoma deal that's on here.
This is 3LCD as appose to DLP so no rainbow effect.
According to unboxing reviews it also has a set of 3D glasses in the box? can't confirm until mine arrives.
If buying from Amazon select amazon from the right hand side, it's currently pre-order delivery in two weeks. Currys is in stock now.
Next cheapest is Ebuyer at £599