RE: Which Mathews would best suite me?
If you have your heart set on a mathews then I would take a hard long long look at a Q2XL. I believe it's a discontinued model but I feel that it's the best bow besides the MQ1 that mathews have ever produced.
If you're open to other manufacturers then I must suggest the pro40 dually from Bowtech. It's also 38 inches axle to axle(againt its name sake) and at 60lbs is as fast or faster than other bows in the same catergory pulling 70lbs.
I myself have a bowtech Liberty on order and I plan on using that for both hunting and shooting in 5-spot leagues.