I changed over to a lightweight solution a few years back after a loooong time on heavy weight Trace Elliot stuff. I tried the 2x10 route with a LM2 but didn't get on with the sound - couldn't get the depth on stage that I was looking for. I was happy with the amp so moved the cab on for a MB151HR, this was better in the depth department but was weightier (and bulkier) than I was looking for so went to a Gen1 Barefaced Compact. This cured the depth issue but found that the cab was sensitive to the bass I was using, it could get a bit boomy with an active in some venues.
Eventually I swapped the LM2 out for the LM3 and got 2 NY121 cabs. This set up has stood for the last 3 years, lovely and flexible and easy to get a good sound out of. For small acoustic type gigs a single cab works well, for bigger gigs both cabs; there really is a massive difference in sound between using one and two cabs, the sound really does open up.