I've really only had good luck with Link handles as far as being able to reliably find good shaped handles. Luckily my local ace carries 32" handles, though I would prefer 30".
I've not had good luck ordering handles. I ordered a bunch from House when I was getting started with axes - based on lots of recommendations, but even when you pay for hand picked at least half are twisted or bent and hard to impossible to get the head to align straight with the shaft. Definitely never pay for house to give your handle the octagon treatment. they seem to always cut the flats with a twist. also, the house handles don't have much of a flare at the knob - and also constrict way too much at the throat before the knob. here is a pic of one I got from them. of the last batch of 6 I got I had maybe one that was usable.
I've looked at the beaver tooth website, but the selection seems limited, and for some reason they like to keep handles listed that have been out of stock for years, which for some reason if very annoying to me.
also, someone here was a big fan of Tennessee hickory handle - and there is one online seller that carries them. I tried to order about 6 handles form them last year. I placed the order online. Waited maybe a month or two. nothing. I think I called or emailed - can't remember now - but I remember thinking that I wasn't going to get any handles from them. Then about a month later, a box showed up with two handles. I had ordered at least 6. received 2. and only one of those was a handle that I had actually ordered. I didn't even bother calling. Figured it wasn't worth my time. The two handles were absolute clubs - which is exactly what the member here to likes them said about them - lots of material - and to consider them a blank to finish yourself - which is about right. but the quality of the wood seemed good.
anyways, I've been burned too many times on ordering handles. hit or miss. mostly miss. hopefully ace will keep stocking the 32" link handles because they are actually pretty nice. good shape, great swell at the knob. a little thinning and you have a really good handle. Their 36" handles are HUGE. SO fat. but the 28" boys axe handles are pretty nice though.
oh, and I've gotten a couple of really nice handles at the local DO IT BEST - not sure who they get their handles from, but they are pretty nice, especially the 28" handles - very slim.