ltd is NOT better quality at all :S
The LTD will be made in indonesia/korea while the jackson will be made in Japan. Neck diving can be fixed by repositioning the strap locks.
I have terrible experience with ltd and esp. So i'll generally stay away from them anytime.
In my honest opinion. get this:

You dont get any better guitar. the neck is perfect. the resonance of the wood is loud enough for you to send your acoustic guitar on retirement.
Another thing is that theres made alot of parts for this guitar, so you can customize it like crazy. I for example is going to order a single humbucker pickguard, and throw in a black battleworn Nailbomb in the bridge ^^