I have a setup like the Nyko, but they're Energizer from Costco. One of the battery packs died the first week, just never bothered to take it back, the way they sit in the cradle it's no problem with getting things lined up, just plop it in and im set. Thing is so bright it acts like a night light in the living room to boot. I think the reason it works so easy is the controllers aren't quite as vertical in the charging center.
For 360... Play and Charge kits are priceless. What really needs removable batteries are the PS3 controllers. No trickle power to the USB cables so you have to charge them on another device or leave the PS3 on to charge your controllers (or if you didnt notice it was almost dead, sit 2 feet from the PS3 so you can play your game)... yeah, that makes sense. If you're Apple.