The Dana 30 shaft ain't much either when compared to 37" tires. Granted the 297-x joints and one piece shaft from the TJs are worthwhile pushing into the 35" tire arena, but that would be the limit in my opinion.
The Ford 9" is a viable consideration in the rear, except that you should realize not all 9" are alike. The Currie 9" is a much stronger housing than you're going to dig out of an old muscle car or early Bronco. There are 40 spline conversions for the 9", but they ain't cheap. Still, for the rear, a 9" is a good sturdy axle. I feel compelled to tell you one buddy of mine bought 9" front and rear from Currie. Fine axles they are. But he regrets not buying 60s. Of course his hindsite (after breaking 9" joints and shafts) is 20/20.
A 44 will hold up to 37" tires depending on driving style. I have a friend running 37s on dual 44s with a Tera low in his 300 and hasn't busted a shaft. Although he does run Warn full floater shafts in the rear and Moser shafts in the front. These are some totally cool shafts. Increases the meat in the joint area significantly.
The Dana 60 is a Dana 60. Not much else you can say except I disagree with the Amigo driver putting it in the same class as a 9". Not even. A 9" and a 44 are actually much closer in axleshaft diameter.
The 8.8 is a pretty much a new axle to the hardcore arena. They are popular swaps right now due to availability and cost. But they're not brute strength. They're a cheaper alternative that's almost Dana 44 strength.
MIT is another axle builder in addition to the ones the Amigo driver mentioned. There's a fellow on this board already beginning a relationship with them and getting quotes on a 60. MIT can do a good job. But you better know what you want, and you better make sure they know what you want. There will not be any extras in there if you didn't request them.
I personally wouldn't touch an axle from Currie. I know how they've built 44s in the past and sneaky **** like that just makes me not want to do business with them. Sorry, but their 44 housings are junk. At least for the TJs. Not sure about others. But that's enough to make me steer clear. Hell, if they had only told their customers up front so they knew what they were buying, that would have been different.
Dynatrac is about the best. When you order a Dana 60 from them, you're gonna get 35 spline on all shafts (including outters). You're gonna get 1/2" thick tubes. You're gonna get 1480 joints. And it's all gonna be brand new. None of that needs to be negotiated, that's the only way they build them. There are lots of other extras to consider. But one thing for sure, nothing is cheap from Dynatrac.
Another option is Sunray. They make the 9" Dana 60 hybrid. Basically 9" ring & pinion and housing, the rest Dana 60. And I hear they do 35 spline outters too. The only thing, they're kinda new and it seems enthusiasm for their product has waned now that more are out there. Something to look into in any case. Try the POR board for info on them.
Sam's offroad makes a mighty fine Dana 60 from what I hear. And I tried to give them a chance to build mine. But getting thru to them was not an easy task. My patience grew short.
There's a number of other axle builders out there. Ya just gotta talk to people who've actually had axles built for them and see what they think. Mine were built by Dynatrac. I paid a hefty price, but I wanted to be sure I got good axle for my good money. By going Dynatrac, that's guaranteed. For one year anyway!
But seriously, Dynatrac IS a quality axle builder. That's pretty much legendary.
On a side note, I just heard yesterday Dynatrac has a lifetime warrantee on their new high clearance housings. Basically to relieve the fears some are having about the durability remaining after you shave so much off the pumpkin. If they had this high clearance diff when I was ordering axles, I would have jumped on it with that warranty.