Not sure if this is the JP trem but I was searching for a floyd alternative earlier in the year and saw this. Got it for about US$130 before shipping. It could be cheaper now. Not sure.
Installed it on a new swamp ash body. Almost drop in fit. Just need to get the alignment right, drill three pilot holes, load the small parts and you're done.
A two point trem is also a good option I think. It is short of the fine tuners on floyds but I think it does the job just as well if you have good tuners installed.
Depends on what you're planning to play.