I got my pre-order in fairly quickly (before the 853s were advertised I think) so got quite a good deal, there was a bit of a price hike a little while in but I got in before this and Pipedream are honouring the initial quote. I should be paying around £250 for mine, so I'm going to hang on for the duration (well, until April, if the get put back again then I'd have to think).
The ti. bikes look lovelly and I might just be able to stretch to one, but for me I think they'd be too expensive. It might sound silly but I'd possibly be too nervous to enjoy riding one, I couldn't afford to break one, with steel there'd be the reassurance of knowing that there was money left in the bank for a replacement if needs be. Anyway, I think that the Kawasaki green 853s should look great.