$349 for the SxA100's? ! Yes, this sounds like too fantastic of a deal to believe. Please tell us WHERE you see them this cheap.
I too had considered both choices, but purchased the slightly 'lighter weight' 43 lb ea SXA100's (vs 46 lbs for JBL Eon 15) because, in addition to its smooth frequency response, its ergonomic shape (with easys to caryy built in handle), size, and better weight distribution make it considerably easier to transport. The only thing I need to point out is that the SXA100's produce a very slight hiss, but is not actually noticeable unless you are within a couple of feet of the speakers when the room dead quiet. This has NEVER posed a problem for for me when performing. I'm still very happy with my EV SxA100 and Yamaha PSR2000 arranger kb gig setup. : A truly lightweight and portable (quick/easy setup/breakdown) system. - Scott