your thoughts on wireless signal transmission.

I'm thinking of adding subwoofers (swarm principle) to improve the LF response in my room. I'm considering adding a couple of Rel No.25 subwoofers and saw that they can be equipped with their own (REL, 24 bit/48Khz) wireless transmitter(s?). If I would use cables, these would need to be 30 ft lengths, as my room is reasonably big. I have no idea what to expect when comparing to very good cables. Obviously costs of wireless are at a fraction of a set of good XLR cables (30 ft). Wireless transmission needs DAC I believe....and what about possible jitter.... Anyone can offer his experience/view.

Thanks,
Han