Ive had NV115s for a while and agree the 6" speaker handles high end really well without the abrasive nature of a tweeter. For recording the cab is amazing; just place a mic midway between the 6" and 15". What you may find though is a lack of very low frequency content; they just don't go down that low. For a while I stacked two, which gave buckets of low end, but unless you are a very loud band you just don't drive them hard enough like this to get the best out of them (although I only ever used with my Markbass head, so could well be different with other amps). For smaller rooms and lighter material (acoustic, folk, jazz) they're perfect, and I suspect they'd be really great with upright, although I've not tried this yet. I found they were a one hand lift and could do two at a time over shorter distances, but not if you have a bad back (they fit nicely on a folding sack-barrow though).