I own the Ultra Towers and love them. They measure very well and sound fantastic. I use mine for TV, music and movies. Which speakers models specifically are you looking at?
Main System: SVS Ultra Towers - 15" custom ported subwoofer - SVS PB-1000 - Yamaha RX-A740 Aventage. 125dB @30hz, 16hz @ -3dB
Computer System: Carnagie Acoustics CSB-1 - 12' Onkyo sealed subwoofer - Pioneer VSX-92 THX
Other speakers owned or auditioned: Aperion T6 - Ascend CBM-170 - Energy RC-10 - Wharfdale 10.1 - Arx A1b