Unfortunately, I can't find a place to do any AT/AeT testing in my local area, so I'm trying to find a more accurate way to determine my most efficient training zones then just simple formulas.

For example, my MAF HR (according to Maffetone) is 146+5 = 151 (34 years old, been running for a year = +5). The problem is, even at MAF +5 (156) I feel as if I'm running well within my aerobic zone - not necessarily at the "Max". I'm breathing almost exclusively through my nose and can converse with very little issues. I always feel as if I could continue the run (even the long runs - unless my feet or legs get a bit fatigued which doesn't seem to be the fault of my CV system) much farther.

My question: can I safely assume I'm running mostly "aerobically" given the above description? Also, is the MAF supposed to be where you're 50/50 Aerobic/Anaerobic, or is some other ratio?

Incidentally, my number 1 immediate goal is to build a solid aerobic base - with a secondary goal of burning as many calories as possible while doing so. I'd love to be able to run as fast as possible, as long as my aerobic training doesn't suffer. Is it possible to feel the way I do on these runs (i.e. very comfortable) and still be running mostly anaerobically?