Tom I also owned & performed with the PAS when they first came out...for 5 months I gigged with it everywhere in all different size rooms....from 50 pp to 500pp..

I have no problems sound wise with this unit....it's sounds excellent for my needs & the MONO vs Stereo Issue I could live with.
For me & why I sold it was more of a Transporting & set up issue lugging around that big round base, sub, & two poles...in & out many times twice a day....& not needed for the smaller venues so then I had to lug a small single amp also for those because the BOSE isn't warranted for 50 or less pp.....for the bigger shows I do all the time it was fine....but adding all those pieces & breaking down & setting up all day long was the straw that broke the camels back....people that stay in one venue every week is no problem they dont have to lug it around every day... I dont need 4 more pieces added to the rig....when one or two powered 15"s sound just as good & much easier to hook up and be versatile using 1 or two.....I have yet too try the NEW Bose with the smaller footprint......we had the old model at the jam.
So it comes down to user comfort Tom in a nut shell.

take care