I've been sticking with the Seoul ones and don't look too much at the Cree's. But as far as I know Forge Europa is a distributor for Cree. However your best bet may well be Farnell or RS for them, more expensive, but you will not be subject to MOQ's and large delivery fees. But make sure you check that thye have the latest versions on output power.
The P7's, not sure who has stock yet, I got the impression they are a bit like hens teeth at the moment. Some European
LED internet suppliers may have them, for ease of mounting I recommend that you get ones mounted on a heatsink PCB.
I am planning on designing a little driver PSU for the P7 that lets you vary the current, and if there are any takers on it then a small production run, for all you DIY light experimenters????
Mr Mike www.mineexplorer.org.uk