Yeah, nothing makes me sound like Jaco. But then again, my wife won't let me leave the house with a headband so that just means Jaco and I set out on different paths, all's well that ends well.
Fretless will be a fun step for you. It's honestly the same, just play your fingers a little higher. You've been playing a long time so you'll probably adapt really quickly because you already know how to move flat or sharp. Usually the shops don't have any or many to try but do what you can to put your hands on a few. The Players are a good deal and the Ibanez have really comfy necks. Good luck. And yes, you can spend as much as you want but you don't need to.