I had a wireless unit. I wanted to use it on the rear wheel so I could put it on the trainer, but the electronic unit had to be really close to the sender and did not work. I then found that my handlebars were too far away from the sender location on the front fork so it did not even work on the front wheel unless I put the computer down lower than the handlebar. No more wireless for me.

I also like the automatic on and off of the wired variety.

I like the wired Sports Instruments SI 90 but the company that made it is defunct so they are no longer available. It had a large diameter wire so you don't break the wiring like on the several older Trek computers I had that had wimpy wiring that easily broke.

If I had to buy a new computer, I would look for one with robust wiring. And one that can be installed on the stem is nice if you have a lot of stuff already on your handlebar.