I have 2 on order from yxt doing the Europe group buy. I know the ROI is not that good but I figured they will keep me going against the rising difficulty until (and if) my bfl order ever arrives. Also I thought they look cool and I have lots of free slots from the pc's I've built.
I have enough coins for 2 more but I had doubts about the UK group buy with the questions over the VAT etc - yxt's units worked out about 2.51 coins each - this includes DHL postage. The UK group buy units seem cheaper at just over 2 coins - but what about postage and taxes etc.
I think ultimately I will wait for yxt for do a second buy and go there again - his group buy was very professional...