I went with a JB Conversions SYE because the design of the yoke will not bind as easily as the others. I also added a JKS 1.25" BL, Brown Dog 1" MML, and a Rokmen belly skid/tummy tuck at the same time and needed adjustable upper control arms to adjust axle pinion caster angle, then measured and called Tom Woods and had a drive shaft made to that length. If you are only installing the SYE and drive shaft, budget about $500 for those two items with ATF fluid.
Frameless top, everyone I know who has one has the Bestop and loves it for the flip back sun roof feature and I plan on getting one myself in the near future. I don't know anyone with the Rampage but I haven't read good things about it.
Performance upgrades, see first paragraph. All of those things I did are highly recommended to build a good foundation for later.
You don't mention why you need 4.88 gears, but a lot the better shops in my area use Yukon ring and pinions kits. If you are running 35's or higher, plan on upgrading your tie rod and drag bar steering system as well.