Here is what I have:
2x 2.1A USB
http://www.jr.com/xtrememac/pe/XXM_IPUIH211/

2x USB 5Vx2.1A (shared, I think) + 3 power outlets:
http://www.monoprice.com/products/pr...seq=1&format=2

The combination gives me 4x USB, 2x 2.1A, not sure about the other two but at least 2x 1A, plus two extra outlets.

I have been looking at the following Macally products:
Non-grounded outlets plus USB hub; 4x USB of 1@ 2.1A.
http://www.macally.com/EN/Product/Ar...?ArticleID=401

Hidden swivel plug 3x grounded power outlets, 2x USB (don't know the amperage/wattage)
http://www.macally.com/EN/Product/ip...?ArticleID=391

Dual USB 10 watt (a.k.a. 2.1A) USB:
http://www.macally.com/EN/Product/Ar...?ArticleID=326
Don't know if this is 2x 2.1A