I own the original unlimited and the 2nd generation unlimited, both in Medium for my XC MTB and
road bike. The 2nd generation felt tighter than the original Unlimited so I ordered a large in the endurance. Between a medium and a large I don't see a big difference, they both work. What I do know is during the first few miles it seemed like Castelli forgot the chamois but now it's my favorite part of the bibs. FWIW, I typically use Giordana FRC-Pro and Vero Pro bibs and so far I prefer the Castelli Unlimited Endurance.
I was looking for a jacket that would keep me warm in the 30s and 40s (F.) and this one is more than up to the task. Even with a minimal base layer, it has kept me comfy down to near-freezing temps. I imagine I could wear it into the 20s were I inclined to ride in such cold. Wind protection is excellent. It gets plenty warm when the mercury rises to 50 but even then dropping the zipper a bit helps a lot. My wife even says it looks good on me!
I've tried a handful of different gloves at different price points and this is a solid mid-range glove for mild winter conditions. My fingers run cold and I find them comfortable down to about the low 40s. It uses a neoprene-like material which is reasonably weatherproof and provides light insulation, but doesn't have a separate insulating layer. It uses a two piece sandwich construction so the seams fall kind of awkwardly at your finger tips and between your fingers where they touch (as opposed to the 3+ piece construction that higher-end gloves have). It also uses some sort of layer bonded directly to the fabric for touch-screen compatibility which is less durable than conductive fabric used in higher end gloves. That said, it's a solid glove for the price and performs reasonably well, but don't expect premium construction and materials.
New favorite winter training jacket. Handles wide range in temperature and training efforts. Zippered side vents are awesome for climbing. Not a wet weather jacket but is uber-functional otherwise. I bought couple more once I saw how well they function. Zippers seem very durable.
