Mmmmm, interesting.
I'm not a fan of a huge low end to my tone either, which is probably why I never end up using models of Dual Rectifiers etc. and why I suppose the Vintage 30 speaker in my Orange 1X12 seems to suit me. The weight of my cabinet really isn't an issue as it's just the speaker cabinet with the power amp coming from my BluGuitar AMP1, which is so small that it's sat permanently on my pedalboard. It is a very compact system and does sound good but the great tones I also get from my headphones made me start to think that a FRFR system might be even better. I was intrigued by the Laney IRT-X but the only clip I could find on You Tube where it's being used with a modeller made the patches sound too bassy and a bit muffled. That might have just been due to the quality of a You Tube recording of course. The Mackie I mentioned seems to get a mixed response so I was also looking at an EV ELX112P.
Perhaps I'm chasing an improvement that won't be there and it will just be 'different' as opposed to 'better', in which case I'll be spending money for nothing other than freeing up space on my pedalboard, which will inevitably lead to me spending even more money! If people turned around and told me 'Yeah, your rig is good but if you switch to this or that FRFR system it will be better' then I'd do it but if the consensus is that any gain will be either marginal or non-existent then I won't bother.