My experience with Mini's has been the same, very reliable, I can't even remember a single FTF with either of mine. Accuracy, again, fairly suspect, but out to 1 or 200 meters, it'll do minute of man just fine.
As for a good 7.62 rifle, our company and a number of others are running short M14 and FAL variants, with good results from both. I'm not a huge fan of the FAL and the failings of the adjustable gas system in certain climates, but the one I have seems to have given me a surprising lack of trouble thus far.
The Socom's from Springfield are excellent, losing only a few hundred FPS from the full length bbl's. The penetration of the 762 vs 556 is very appreciable when firing through barriers, even glass windshields, but particularly walls and doors. It's well worth the extra recoil and smaller magazine capacities.
When it's all said and done, shoot and use what works for you, after all, it's the operator not the tool.