Both are very good. As mentioned, there is more flexibility with the Orban, but a lot of people prefer the Omnia sound, so it's a personal preference decision. The fact that the Omnia is nearly half the cost of the Orban, makes the Omnia attractive since it still sounds very good.
If on a budget, you might also consider Stereo Tool running on either a PC, or on a Raspberry PI with a HiFi Berry card. Cosmetically it's nothing to see, but you can get a completely competitive sound for considerably under $1000USD. We have one running here and it is completely comparable, and I think is better than, the high end products from Orban and Telos. Takes a bit more work to get it up and running, but it's rock solid once set up.