First, My question about weight in relation to Trace cabs was because I knew they're quite heavy.
Totally depends upon the amp and what particular cabinet you intend upon. Also what sort of music you play!
Whilst Barefaced stuff may be great - not for me, but I know there's lots of fans in these parts - they're rarely in the price range you originally stated.
I use 12" speakers in my rig, to my mind/ear they're a good balance between low end response and having the articulation of smaller drivers. I have 2 Bergantino 1x12s, and there's an immediate apparent difference in adding the other driver - but sometimes (in fact quite often) I don't need both.
Others will no doubt explain this in dissected detail, but when shopping for cabs the main thing to look for is frequency range, sensitivity of driver and the given spl of the cabinet. Just like amps, wattage doesn't equate perceived volume. Also, you might decide you like certain things - like you may prefer a horn over a piezo tweeter, or even no tweeter at all.
As an affordable decent quality option, I'd look at the Fender Rumble 112 cabinets. Less than £300 new, with a ceramic magnet Eminence driver.