I bought a set off ebay a couple weeks ago. 1.25" hub centric. Seem to be very nice quality pieces. I've rechecked torque on them a couple times and once after last weekends TSF run and they're holding torque fine. I think this is the biggest negative about them, if they come loose because you havent checked torque. A friend has used them on his jeep now for 6 or 7 years without problems.
Jeep actually seems to track a bit better now, and I like being able to turn to the stops again. Another reason I wanted the spacers was to keep the fenders from hitting anything. After watching some video of people doing a hill climb at TSF I realized without the tires sticking out a little bit the fenders would have been rubbing the mud wall.
Here's the ones I bought. 4 Pcs Jeep TJ XJ Hub Centric Billet Wheels Spacers Adapters 1 25" Machined | eBay