I've been using a dongle system lately on the last few gigs I've had. Worked great for me so far. I wouldn't count them out. They are getting better and better. I own the NUX 2.4ghZ version and that's my least favorite. My others are UHF based and work great. I briefly had a Line 6 unit and had dropouts right out the box. No sir! Back it went.
I forgot I also have an AKG mini UHF system that works great too.
I forgot I also have an AKG mini UHF system that works great too.