UPDATE
I got the tires installed last night. Easiest tire install ever! I installed them on Roval SLX24 wheels, replacing a set of Roubaix Pro 32s. The rims had already been taped from the previous install, so I just wiped them off with a paper towel and slipped the 5000s on. Tire levers were not needed. Put in 2 ounces of Stans race. The tires aired up with a standard Bell bicycle pump. 30 pumps aired each tire up to about 80 PSI. From watching the air gauge built in to the pump, they sealed immediately. And, there was no need to adjust how the beads set, they just popped right into place. Very, very user friendly install.
The tires definitely roll better than the Roubaix Pros. I took a 30 mile ride this morning. Over the same route I've ridden many times in the past few months, my moving average was .6 MPH faster than any previous ride with the Roubaix Pros. I'm not a speedster, so this is all the more impressive. Interestingly, the last time I rode this particular route, my moving average was again .6 MPH faster, with the same heart rate. Wind speed and direction were similar.
Going back to my ride data from when I was running 28mm GP4000SIIs for a few weeks, it appears the 32mm 5000TLs are again slightly quicker.
As far as comfort goes, they seem very, very similar to the Roubaix Pros. If I had to venture a guess I'd say *very slightly* more comfortable, but that's hard to judge from a single ride. And if they are, it's likely due to the slightly lower pressure I'm running in them (about 5 pounds less than the Roubaix Pros.)
The tires are a little expensive, but were very, very easy to install. I'm very pleased so far, but only time will tell. It will be interesting to see how they handle punctures, and how they break in as to speed and comfort over the next few thousand miles.
-Matt