Tried my first ever pair of Ace yesterday. I was riding Indy's 149 with medium bones before (top washer only).
Ace 44 with medium bones without bottom washer are way too turny for me, so I put both washers.
I didn't tested the stock bushings, maybe I will give them a try.
The turning is very good, they are lighter than Indy and you can feel it when you skate.
Grinding is good, crooked and smiths are perfect, and I think the wheels does not touch the ledge as often as Indys during tailslides.
I'm skating them with a 8.375 Quasi board (which size like a 8.25 btw), so I put the two washers outside of the wheels.