Hey, I wanted to add some info about the Hoxey aluminum necks. I don't see much info on them but I just bought a rando-parts jazz bass with a Hoxey neck. It was a mess, but I got it set up and playing great after some work. The main issue was the nut slots being slotted too low, all strings buzzed on the 1st fret so open notes were unplayable. The guy who originally put the bass together may have slotted the nut himself, as he had strung heavy strings for drop C. I emailed Hoxey and they got right back to me with the specific pre-slotted graphtech tusq nut that they use. I ordered that, and it was still too low, same issue. I had a tech raise the nut by machining a little slice of brass to go underneath and it plays fine now.
There are 2 other things that are weird design issues that are slight problems:
1) the string retainer on the head stock has 2 screws that the E and G strings rub up against, so when you're tuning those strings you can feel the resistance. I put some teflon tape I had lying around on those screws and that made it better. Still, weird that they didn't notice that issue and move them out of the way.
2) The profile of the neck has some weird angular 'shoulders' below the edge of the fretboard. I think it's to simulate a rolled fretboard edge... it's hard to explain (I can share pics of there is interest). It ended up not being an issue for me and I've played through some long sessions and just got used to it.
3) The neck is straight as an arrow, like no relief or curve like a wood neck under tension would have. I don't know if that's normal for aluminum necks. Ended up working out, my action is where I like it and no fret buzz.
I've never played any other aluminum neck brand, so I don't know what to compare it to. All in all, I'm very happy with it, but it took some work to get it the way I like it. The design issues are weird and I will reach out to them and see if they are at all interested in hearing what I have to say, I feel like at least the string retainer issue should be an easy fix.
Again, I can share pics when I get home if anyone wants to see.