Thanks for that.
@Tubster, I guess I was expecting you to say that the RCF had greater clarity and punch and was less muddy than the Alto, based on the quality of the speakers etc used in the RCF - just based on similar improvements in the sound my cabs have delivered as I've worked up through the gears over the past 5 years to higher end cabs.
I suspect that more 'sonic authority' broadly = greater clarity and punch, although it doesn't sound like the Alto was 'muddy' at all from what you were saying? For the money, the Alto clearly is a LOT of kit.
But I know at 39lbs (RCF) vs 55lbs (Alto) my back is going to love me forever and that between the lighter weight and the additional sonic authority, the RCF (with the benefit of the 10% eBay discount!) should be well worth the extra coin. My thanks to @jrixn1 for bringing the particular 702 AS II model to my attention!
A health warning to fellow BC'ers: starting gear threads can damage your wealth 😁. It invariably seems to do so for me! And I note from the poll that there are 6 other bands, besides our own, thinking about subs too...