Several places have a combo deal that includes the SYE and the driveshaft. Here is one:
http://www.performanceoffroadcenter....oducts_id=2042
I've never heard of anyone having a problem with any of the SYE kits. If you prefer to do as Bounty said and get a front XJ/TJ shaft shortened, heres the kit itself:
http://www.performanceoffroadcenter....roducts_id=153
Really, all the SYE's I've seen have been the same, with the exception of the Super Short ones. Find the best deal you can get on one and get it. If you'd prefer to get a combo that comes with a driveshaft as well, the one I posted up top is about as good of a deal as you can get.