reliable magazine companies?

I recently bought a CTW, and been searching for a thread where reliable mag companies are listed, only to find none. I saw somewhere that systema mags wont work that well in a CTW, so which company is good? orig celicus, MAG, matrix..etc..

i use A&K and working just fine, systema I trie and work fine

I've tried the following - Celcius (good), Systema (good - same as a CTW so dont pay the extra as doesn't get you anything different), Vanaras (good but a little fiddly to load).

CELCIUS ok , VANARAS ok