I've done some research on this, and am interested in TB'ers noble feedback

I'm debating between the JBL and the Mackie, to be used for mains at small gigs, and monitors at band practise. I'd be interested in feedback on either, or apple to apple comparisons.
-Obviously, the Mackie is 12" and the JBL 15"
-Same power ratings i believe
-about the same physical size and weight
-Mackie apparently has the overheating issue, although our band doesnt TRY to play very loud
does anyone know how bass guitar at low levels sounds through either??`
[ Also, as a side note, for small gigs (30 people) i'd like if we could just di my bass and leave my amp at home to save van space and 'work'. Right now we have JBL Eons -NOT the G2..so they'd become our monitors. Would this work or would the bass not sound good through the Eon?? Because if this wouldn't work i wouldn't worry as much about all the people who recomend a sub with the mackies ]