I use Magpul PTS M version Pmag Midcaps because they feed great and are very durable when it comes to just droping them on the floor from a standing position.
While I don't load as little towards the Real Cap side, i still don't load them beyond 100 Rounds. my speed loader holds around 70 - 80 rounds but i probably fill up 2 mags with one speed load i don't like the spring getting too tight so i probably just click the loader 5 or 6 times before I move on. since each load is about 4 - 6 rounds
VFC HK416 Custom
Custom Bowie Tactical x SAI Glock 17 (TM Base),
Custom SAI BLU Glock Build (Timberwolf Base)
Custom Zev Noveske Shooting Team Glock 34
Custom Zev Dragonfly G17 (Project) (In progress)