I'm in pretty much the same situation as yourself Haydn1971 although I'm coming from a 500D. There is a couple of things on the 6D that concern me slightly.
1. Top shutter speed, it's no less than what I have at the moment but it would have been nice to have higher, I can understand why it's not though
2. Image quality, I expect it to be real good but I want to see it tested (not DXO) first
3. Handling, I'm not sure how I'll get on with lack of programmable buttons and that wheel on the back
Point 3 is obviously personal so I look forward to it being released.
I would really love a 5D3 though but I'd rather have a 6D and more glass, Spokane's suggestions was making my mouth water!
What I'm really interested in here though is the comments about Digital Rev, do you really not have to pay tax? I thought they added tax at checkout so price ends up 20% higher (GB) than the advertised price.
Can anyone confirm that this is wrong please?