The 2.8's do require three additional things - more money than 1.8's (usually about 2 times as much), a larger room than 1.8's, and more power/current than 1.8's - though not drastically different in the last.
I have a pair of Mahogany 1.8's and gloss black 2.8's. I run a small CEC integrated to the 1.8's and larger, more serious amps/system with the 2.8's.
Curious - why a sub won't work for you? Folks living around/above/below you, or not sure you would be able to make it work correctly? If set up correctly, one should not be able to determine that there is even a 'sub' in the room.
A wonderful system would be the Revel 20's as you have already and ad a Velodyne HGS-10 ($400 to $500 used) - super small box, very quick musically - just a wonderful all around sub.
I have a pair of Mahogany 1.8's and gloss black 2.8's. I run a small CEC integrated to the 1.8's and larger, more serious amps/system with the 2.8's.
Curious - why a sub won't work for you? Folks living around/above/below you, or not sure you would be able to make it work correctly? If set up correctly, one should not be able to determine that there is even a 'sub' in the room.
A wonderful system would be the Revel 20's as you have already and ad a Velodyne HGS-10 ($400 to $500 used) - super small box, very quick musically - just a wonderful all around sub.