As for boot times, my Win7 PC boots just as quick as my SAM with OS4.1u4, both running SSDs.
Yeah, since Update 3 OS4.1's boot time has become a lot slower, it's the same as my Windows 7 PC now as well. Hopefully it'll be restored to how it was pre-update 3 at some point, I could soft reboot in around 3-5 seconds then, more like 25-30 now.