If it wasn't for my O2 contract not running out until May I would have gotten the best deal. Yes its £20/month for 18 months on T-Mobile and £90 up front, but I was going to get a second T-Mobile Combi 20 contract anyway without a phone, so this way you could say the N900 only cost me £90.

Of course the plan was to do it once my O2 contract ran out and keep the Xperia X1 rather than selling it. But the prospect of a NIT in my pocket instead of that poor excuse called Windows Mobile, combined with the design flaw of the X1 (the case cracks), I just couldn't warrant keeping it and sending it to be repaired for the next year every time it cracks again.