Re: APS1 vs SSL1s
I haven't played APSs but I love the SSL2s in my HSS that I've posted on here loads of times. I chose them as I wanted a more stereotypical Stratocaster vibe - bit scooped mid so the prominent high and low give the impression of more power, attack, chime, and piano-like clang. Both pups are very useable and sound great from clean to hard rock.
Some sounds.
Clean: neck, neck/middle, neck/bridge (split), bridge split, bridge full, all three with bridge split.
Dirt. Neck, middle (using coin as pick, so attack is a bit different); humbucker.
Because of the way my rig is, things get balanced out, so the SSLs don't sound too bright.