Which do you guys prefer to attack your hooks to you Tennessee and Alabama Rigs?

I use the clips they come with unless they need to be swapped out.  Spit rings would make it a bit more challenging to swap out baits and heads if needed.

If you put split rings on the hooks/jig heads of your A-rig and then attach the snaps to the split rings, then when you get the A-rig stuck in a tree top (which you inevitably will) and you can't get it back by getting opposite the snag and pulling, then a consistent steady pull on the rig will break at the split ring and you get most of your A-rig back - at least that is the plan and that is how I use split rings and snaps on A-rigs.

I put split rings o the ones I have.

I talked to a guy at lake fork that lost a big fish when a snap failed.