I've never seen the sky's in person, I made my own 1-1/2" spacers(there is a set for sale in the garage sale forum
). I HAVE however had the RRO ones and was disappointed in them. They arrived to my door only 3-4 weeks after I ordered them(and they were in stock at the time) and they looked kinda short to me, so I measured them. The ones I got measured only barely taller than 7/8", not counting the isolator flange that fits inside the isolator. When I emailed them to complain, I was told that the spacers are supposed to provide 1-1/8" of lift, NOT that the spacers are 1-1/8" thick!
Anyways, as for product quality, the RRO ones are nicely made. I just don't think they provide anywhere near the same lift as the Sky ones if the Sky ones are actually 1-1/2" tall!
