I think you're looking at this worng Troy, as it sounds like you want the best axles for the best price, which usually makes sense. But, IMO once you step up to 37's you no longer have the luxury of selecting axles based on price, you need the best, period. I'd only consider Warn or Superior, as they are the only two that are proven. Of these, I'd go with Warn, as they have a lifetime warranty, + I've been running them for several years & havn't broken one yet.
You're HP44 is going to be at it limit with 37's, that is if you go with the best available axles, anything less & you'll be past it's limits.
As to your rear axle, I think putting 37's on 31 spline axles (regardless of brand) is asking for trouble, unless you're only wheeling moderate trails, which begs the question of 37's in the first place.
Not trying to be negative, but depending on your goals/use I think you should give more thought to your build-up.
Paul