I'd point out that OHMS are pseudo omnis (360 degrees but not equal tonality/SPLs in all directions) and that the wide-range Walsh driver technology is a big part of what makes them special.
Otherwise, the only other omni/wide dispersion design I can think of is perhaps used Gallo Refs. There's a pair on A'gon now for under $1500 which is a very good price.
Otherwise, the only other omni/wide dispersion design I can think of is perhaps used Gallo Refs. There's a pair on A'gon now for under $1500 which is a very good price.