Thanks for reaching out!
Both Altras and Oboz run pretty close to true to size, however, the foot-shape construction of your Altras means they will likely feel roomier, particularly in the toe box. If that space is something you appreciated about your Altras, you'll likely benefit by moving up a size in Oboz, or going with a wide.
Another option would be to book a virtual outfitting appointment with one of our expert boot fitters. They can talk to you about your needs, help measure your feet, address any issues, and help find the best fit for you.
Hopefully this helps, thanks!
Hate to disagree with you, John, but I've spent a lot of time in both brands. I consistently take a 9.5 in Oboz and a 10 in Altra. This might be a good time to spend some time at REI trying them on before you buy. You can never go wrong letting your feet pick 'em out.
Appreciate your perspective! Disagreement is always welcome, except when talking about the best cookies on the trail ( 1. Homemade chocolate chip, 2. Girl Scouts Thin Mints, 3. Lorna Doone shortbread). Footwear can be a very tricky thing to get correct, in terms of fit, even when you're able to try shoes on. The more experiences we have to draw from the better!
Thanks for emailing us back with some more information! We're going to post it here in the community so others can weigh in with their thoughts or consider it when they are thinking about purchasing new footwear as well.
@renwest as a fellow narrow footed human, I have found Oboz to fit just right. I measure, on a Brannock device, at a 7.5 (A-B width) and found the Oboz Bridger perfect in an 8. That said, fitting feet is SO hard online so @REI-JohnJ's suggestion for a virtual outfitting appointment or heading into a store, as @TomIrvine suggested, are both really good ideas! Hope this helps, and good luck!
1 - I sense a new thread on the way about trail cookies.
B. Both my wife and I have had excellent experiences with the "shoe-fitters" at several different REI stores. (Spokane, WA and Rochester, NY) They have been thorough and patient.