In reply to GravitySucks:
I've got old style (yellow and orange) Scarpa instinct slippers, one size down from street size. Find them to be a wider fit than 5.10s I have had before. They had a little reissue a year or so ago. I don't like the modern Instinct slippers as there is more rubber on top which hurts my toe knuckles (longer middle toe). I think the lace up Instinct has more similar rubber on top to the old slippers.
Also, Tanya Ra, though I got them in street shoe size after hurting my toes with a pair of Instincts that were too small (1.5 sizes down from street shoe). Coming off boulder problems was making my toes hurt for days after. I'd say the Ras are wider than 5.10s but I got them in comfy size deliberately.
I'll probably get smaller Ras if I can't get Instincts I like when mine die.