I've been a cyclist for 25 years, mountain and road, and these are the most comfortable shoes I've ever had!! They take a bit of getting used to, adjustments are sensitive, but I was able to get them dialed in after my second ride. I've put 150 miles on them so far and, again, they're pretty amazing.
Pay attention though The Pearl Izumi website warns that they run small and to buy them 12 size bigger than you've been comfortable with. That is very true, but if you have paid attention, you'll be happily surprised.
I agree with everything in the previous review. Amazingly comfortable. The fabric just pulls across your feet smoothly and uniformly. Definitely improves my lift. I just want to add some remarks about the BOA system (which is not unique to Pearl Izumi btw). The dials are bi-directional (unlike the Techno 1s on my old Sidis). And most importantly are easy to tweak while you're riding. So if you feet swell, no problem. And they quick release when you pull them up, so you are out of your shoe as fast as you can pull the shoes off. For a state-of-the-art shoe, I think they're reasonably priced.
I have been riding with these in my rotation for 2 years now. I'm 6' 180 lbs and The L fits me nicely. Compared to other bibs these rise up a much higher in the front, on me about 3 above my navel. The straps are comfortable and the chamois is good for multi-hour rides. I've noticed the stitching coming loose around the chamois at the lowest point where the saddle edges hit the inner thigh, doesn't seem to affect the fit though. My only gripe with these is the sticky dots used to secure the legs have turned hard over time and they irritate my legs for the first few miles. I always wash in cold water and always hang dry, 2 pairs and they both have this problem with hardened gel leg gripper dots after about a year.
I started with PI many years ago but as they needed replacing I decided to try some of the other popular brands (Italian, French...). I found that the PIs, with the 1-D chamois are the best fitting and most comfortable shorts for me. I have noticed lately that the sizes are getting a little smaller so you may want to order up a size.
My only complaint is that after about 2 years the black fades to a copper making it appear as thought they are see-thru! However, PI has replaced the affected ones - nice! I am 6-2 and have been using a size XL. I ride about 150 miles per week.