After about 3 weeks on my 93s, I'm going back to 99 F4s. The 93s were amazing at first, but the slide started to get stickier over time as they got worn in, especially on "angled" slides like crooked grinds and smiths. I guess that's true for pretty much every wheel, it's just more pronounced with these. Sucks because everything else noted about the wheel is great. They're fast, I definitely notice less aches in my knees afterwards, etc. But as someone who pretty much exclusively skates ledges and curbs, the slide is essential.