SIDI Crossfire TA Boots

[Convert]

Well I'm in the market for some new boots.....I didn't think I would get into racing so my first pair were Thor Quadrant, nothing great but they did the job. Now that I plan on racing I am looking at a pair of SIDI Crossfire TA. The question is....do the SIDI boot sizes correspond with other boot sizes or do they vary quite a bit...ie will size 10 Quadrants fit like size 10 Crossfires?
I want to purchase them online so I can save a chunk of change, the problem is that no stores in my area have the size I am looking for so I can try them on. Obviously this is a problem; anyone out there who can shed some light on the old boot problem?

 

[2-Strokes 4-ever]

I wear a 9 1/2...10 shoe. I have size 10 (44 euro) Sidi's that are a hair big, but work well with thick padded socks. Best boots I've ever owned (protection, light weight, longevity).....just ordered my 2'nd pair.

 

[Convert]

Excellent......thanks for taking the time to reply, very much appreciated.