Hadn't heard of them before, but compared to the newly redesigned Talon grips for the Shield, the BooDads look like they will have a seam that meets on the backstrap area. In my experience this isn't good for long-term durability in hot/sweaty range conditions. That back seam on my old-design Talons started to move around after about 7-8 months as sweat, skin oil and thousands of fired rounds took their toll.
Talon redesigned theirs to put an overlapped seam on the front of the grip (like their Glock product). So far I'm impressed with the difference of the redesign on my Shield.
Bottom line--for the few extra dollars, I'd go for the redesigned Talons over the Boodads.