...So I went looking for something else, and ended up with something just about as fast per mob, but capable of bigger mobs.
I went from:
Prot Spirit, Breeze, Mending, Balths Spirit, Essence Bond, Mantra of Resolve, Arc. Echo, and RoJ
to
Prot Spir, Breeze, Balths Spirit, EB, Resolve, Arc Echo, SoJ, Cry of Pain.
To make it even better, I now use Tahlkora much more. I have her run mending + watchful spirit for a constant +5 hp, as well as SB/AV/SV/Conjure Phantasm. On her own, she (smartly) casts Phantasm on every aggroed enemy (rather than focusing on 1 at a time).
So, because of knockdown I can aggro more enemies at once. Before, I could do maybe 5 aatxe at once... now I can do just about as many as I can reach. While it may take an extra 10 seconds or so to kill each mob, the fact that I can take 2 mobs at once means it's faster overall.
I don't know if anyone other than me actually still bothers 55'ing UW, but just thought I'd share my solution =)
G

