I now have over 2000km on a set of Bitex Rar12/A713SB, and am very happy with them so far. Especially the rear (Rar12) is very impressive for the price! Excellent machining and fit. But of course the polishing (mine are silver) are not up to e.g. Tune standard, which costs 5x as much. The blue Enduro bearings still work like new. I have worked with the 245g Novatec rear before, and IMHO Bitex RAR12 is better. It could easily be sold at double the price, if it had a well-known brand name stamped on it.
To give a quieter freehub (and with less drag), I removed one of the two "teams" of 3 pawls. This does not
make for a weaker freehub, only doubles the engagement angle, so it is now on par with Shimano and standard hubs. Added bonus: I have a complete set of spare pawls in reserve
I would definitely buy Bitex hubs again, but not the RAR9 rear (aka. "EDhub"), as I believe the flanges are thinner (= too thin) - and then it has slightly smaller bearing capacity as mentioned earlier in this thread.
Just one thing: ALWAYS take a new Bitex hub apart to check for small metal shavings in either freehub, or pressing against the bearings! The hubs are good as such, but apparently Bitex cut too many corners when cleaning and assembling, so many come with debris or small metal shavings hidden inside. Both my front and rear hub had this. If this is removed before they are used, it will not do any damage, but otherwise the freehub and/or bearings can be ruined very quickly..