Brushless 8ight Batteries?

[JeffEmbracedDC]

So, I've got an 8ight and I'm considering going brushless. I have all of the brushless equippment, though I only have NiMH batteries. So, I'm trying to see what the best bang-for-the-buck 4S LiPo batteries may be out there.

Has anyone had any experience with these?
1. http://www.hobbycity.com/hobbycity/s...idProduct=6351
2. http://www.hobbycity.com/hobbycity/s...idProduct=4129

I just purchased this for my radio (DX2.0) http://www.hobbycity.com/hobbycity/s...idProduct=5461

and so far it seems pretty decent. Nice construction, good voltage, pretty balanced from the factory (only took about 4 minutes to balance out of the box). I also purchased some other items from Hobby City that seem to be of quality.

Any other links to good value 4S packs would be great.

Thanks, guys.

-Jeff