Comfort depends on how well the shoe fits your foot. This is entirely individual and nothing anyone will be able to determine for you.

I've had a pair of all three - still have some FSN 85s (Asolo) and have since moved on to Trekstas, which fit my feet like gloves. Durability is going to be about the same with all synthetic shoes - some will get you 700 miles if you're lucky, and terrain you hike in has something to do with it. I'm sure if I only hiked on nice dirt trails I'd get more out of them, but I hike in granite filled trails, off trail, and the shoes tend to get pretty chewed up.

The only shoes that are worth any amount of money are the ones that fit your feet, protect the soles of the feet (a decent last and midsole help a lot, aftermarket insoles get me the rest of the way), and are comfortable for miles of backpacking with the loads you carry.