Disclaimer: I have not worn these shoes outside yet
Here are my far-too-soon first impressions of the new 2010 Montrail Sabino Trail runners. I just received them as a warranty-claim replacement for 08 Hardrocks (12Wide) with defective soles (panel delamination after ~100 trail miles).
Customer Service told me that the new AT Plus is the closest replacement to the Hardrocks, but I opted for the Sabino because I have a trip coming up and the AT Plus are not available until March. I should note that Montrail Customer Service was excellent and even bumped me up in the line after I told them of my upcoming trip.
Although the shoe has a "wider forefoot", I find them less roomy than a true Wide size. Montrail no longer makes half or wide sizes, which is unfortunate. They feel somewhat tight on the sides (wearing a Smartwool crew sock). I need to test them again while wearing a Darn Tough 1/4 sock, which is a little thinner and what I normally wear while hiking.
The tongue and the heel do not have as much padding as the Hardrock, but it seems adequate enough. The arch support is also not as firm (a little too firm in the 08 hardrocks), but adequate. I would prefer a little more footbed cushion, but do not plan on using any inserts. There is plenty of mesh for ventilation. I like that the soles have fewer "panels" that can delaminate and fall apart (a design flaw of the 08).
So far I really like the shoes and hope that my indoor wear with larger socks will stretch the sides a little; my wife wants me to stop pacing around inside. The next size up (13) would be far too large.