Love my Senns wireless gear... worth the money. Lower cost 2.5 and 5.8 wireless gear is getting too crowded for use on live stage.
I've went down the Universal IEM rabbit hole. I was never satisfied with universals, so wanted to try customs, so I went with Alclair for my first pair. I found that customs works best for me with my small ear canals. I used the Alclairs for 5 years, and upgraded to 64 Audio A12t's 2+ years ago. Didn't hesitate paying the $$$'s with no regrets.... but I did buy them during the annual Black Friday sale. I went with 64's because of the features... especially the APEX module. It's like an open back IEM. Very comfortable, and I can wear them longer with no built up pressure. They are great on stage and mixing sound... but they really shine just listening to music, movies, and gaming...
I still have my Alclairs as backups.