I'm trying the Topo Ultrafly5, which is their stability shoe. The shape is great. I got the wide and by my measurement the toe area is 4.5" across (Hoka wide is 4", which my little toe poked a hole through.) I measured as an 8.5 and they recommended going up and wide, so I got the 9 wide. I am trying to decide if I need the 9.5, but I don't want the foot to be moving forward in the shoe. I am MUCH MORE comfortable and stable in these, than either the Hoka Bondi 8 or the Orthofeet, which has an odd rectangular shape. The Ultrafly has 30mm height in the heel and 25 in the forefoot, so it is a 5mm drop. Have to do calf stretches while adapting to a lower drop. So it is a low drop, not a 0 drop. High drop hurts my bunions. The Hoka is a 4 to 6 drop, but the height of cushion under the foot is high, so I felt unbalanced sometimes. I would like to wear just the shoe, without adding orthotics, and so far, the roll bar seems to keep the over pronation in check. If I need to add the orthotics, I will probably need a larger size. They let you wear them outside and can return within 30 days (topoathletic.com only--be careful, there are knockoff sites with similar names). Very comfortable. Decent arch support. Wide toe box, but not high. The fabric stretches, though, so even though I thought I would miss the high toe box, my feet don't. And the shoe fits the mid-foot and heel, which many wide shoes do not. My toes are getting used to walking without being cramped. I wear Birkenstock sandals so my toes are fine in those, and the drop is lower. But all my athletic shoes cramped the toes. The right foot is deciding if even this toe box is wide enough for longer walks in warmer temperatures (Florida). I am also experimenting with different sock thicknesses. I'll update again. I am walking a mile most days in them (slow pace, about 30 minutes, between foot and back arthritis).