So I went riding in an 8.5 Burton boot. I rode for about 2 1/2 to 3 hours. I didn't seem to notice any discomfort while I was riding, but when I was walking back to my car to leave, I noticed some discomfort and possibly a little pain because it felt like the boot didn't have enough room for me to extend my toes, especially the big toe. I think the reason there was pain was that my 2nd toe was poking into my 3rd toe because they were pushed together.
It seems like a no brainer to go with the 9 then, but you all have said that boots will pack out usually a half size after some use, and that it's better to get the smaller size. So should I stick with the 8.5 and wait til it packs out/heat mold it? I only rode for 3 hours, and perhaps that's not enough time to pack out. Again I didn't notice this discomfort while riding, I only noticed it on the return trip to my car. With this is additional information, which size would you recommend?