Finding specs isn't too hard guys. Here's a few links for you.
ZTE Avid 4G - Full phone specifications
ZTE Avid 4G specs
LG Motion 4G MS770 - Full phone specifications
LG Motion 4G specs
Personally, I might choose the ZTE Avid if I didn't already own a LG Motion 4G. A bigger higher resolution screen is nice. Then again, LG has a sweet 1GB ram, 1.5Ghz cpu (via LG accident), and the battery lasts longer. It's a tough call. On second thought I might go with LG.
According to my research, ZTE impressively has more worldwide sales than LG.