Over the last few years, I have worn various types of Altra shoes mostly for running, but I have also used two of their trail running shoes, Lone Peak and Superior, for trail running or summer walking. For general running I prefer either The Provioness, Intuition or The One because they are softer and have more padding on the foot. All of their shoes are very flexible and provide good ground feel.
In terms of their trail running shoes, I have found the lone peak to be the more robust. The superior were very quick to get holes in the sides (caught on twigs and low scrub), but importantly, they did not disintegrate much further and have held up. Neither has great grip. From memory, the shoes come with interchangeable inserts for different terrain. I found the trail guard at the back to be annoying and cut it off.
In terms of sizing, I have found that they run small for size and also inconsistent across different styles (the inconsistency in sizing was worse in their early days, however it was disclosed on the website and this guidance provided accurate). My husband also wears them and both he and I generally buy a half or in some cases a full size larger than we normally buy. The shoes have a very wide toe box (but not a high toe box), and they fit snuggly on the middle part of the foot and the heal. My son has wide and high feet (not sure actual width). He wears Altras but prefers to take the insert out to have more room in the shoes. In short, I'm no sure about the room for wide orthotics. I've bought several pairs from
http://www.injinjiperformanceshop.com.a ... ions/altra (no connection) and found them to be helpful, they may be able to help you.