Unfortunately the best sets for defense are gonna be costly. Regen shouldn't be too hard since those bonuses are usually awarded with only 2/3 parts of a set. However, for defense you should be looking for:
Gaussian's Syncronized Fire Control
Scirrocco's Dervish
Touch of Death
Blessing of the Zephyr
Obliteration
Numina's Convalescence
Performance Shifter
Red Fortune
Mako's Bite
Steadfast Protection 3% defense unique
You can get about 3% defense from a 3 slotted Combat Jumping with 3 LotGs and get some +HP and +regen out of it.
I am trying to find any guides for a BA/Shld brute. I am looking for recovery and defense and was wondering what IO sets everyone might suggest. I'm at level 48 now and don't have a huge amount of inf to spend, but this is a work in progress so I don't have to get everything right away. Any ideas?