I have been riding SRAM on my new Orbea since November. On my old bike I had Ultegra with spacers to accomodate my small hands. I will tell you my opinion for what it's worth:

1) Shifting is crisp and easy - very fast
2) I like the look of the cables being under the tape - clean looking
3) I would not recommend it for small hands unless you use a women's specific bar - I have smallish hands and the drops can be a stretch for me as opposed to ultegra with spacers. Apparently the smaller bars accomdate a lot of women though - as two pro female teams are riding it - surely some of them have small hands! I would just be careful that just because bar xys works on your current set up - make sure it works with the SRAM geometry. You cannot put spacers in the group I have due to the way the brakes are made.
4) I love the hoods - they are very comfortable and smaller than ultegra. Good for small hands.
5) I have the Force group - and for brakes there is a recall on the metal used in the bolt to mount the brakes - so read up on this - not a brake quality issue - a metallurgical mishap.

If you go with SRAM - I am sure you will enjoy it as much as I do.

Debi