If you want to play a "full" 1.7.10 pack (no HQM, has tons of tech and magic, and cosmetic/vanity mods to make one's base look better), then you'd be hard-pressed to find a pack more polished than
Infitech2. The pack has received considerable config and script tweaking and is as balanced as any pack I've ever played. Pretty much everything is possible, given enough time and resources. If there are any exploits/cheats/OP mechanics, those are rooted out. The end result is a very polished pack with a consistent play experience.