Snap I'm so late to the trackir party lol. Think op already made his decision, but just to add my recommendation and wireless option below...
Yes I can definitely recommend it! Used it on 34 inch ultrawide monitor and now I'm golden with a 49 inch super ultrawide(SUW) monitor. Imo its the perfect combo, an SUW and Trackir!
One of the issue's with trackir most people have is, having to physically move your heard away from the monitor BUT your eyes are straining looking at the monitor at the same time. Imo, simply using a large tv (at least 43 inches) or ultrawide/superultrawide monitor (at least 34 inches) can eliminate that head/eye problem. Haven't tried trackir on anything smaller than a 34 inch ultrawide monitor and no way in hell would I want to lol. Smaller displays w/trackir will lead to eye strain, headaches and in game view discomfort.
I have track clip pro (delicate and wired, but after about 4 years of use, still going strong, hasn't broke yet, and I've dropped it a few times over the years too lol)
WIRELESS OPTION:
I did purchase a wireless Track clip pro (photo above) about a year ago or so, and it works great! Far more durable than Natural Points Track Clip Pro. However, I opted for the cheaper version with only 4 hours battery life (rechargable). Few months ago, I was in a RD Club ace and the battery died on me lol... Before the race I couldn't remember if I charged it or not so I assumed I did! After that, I just went back to using the wired one stress free and kept the wireless one as a back up. Can't remember where I bought it online, but the guy made them himself 3d printed and offered 4hrs, 8hrs and more battery life options at higher cost. I'll have a better look online to see where I got it from and if he's still selling them.
To start (trackir software), may I recommend setting "speed" to "0.2" (for R3E, I prefer 0.3), "smooth" to "2," and disable all axis accept yaw and pitch. Use a little (just a little) pitch to check centre mirror and adds realistic head-in-cockpit movement and the yaw can be configured how you like for looking left/right. Imo, all other axis will distract and distort your driving experience. Trackir ain't VR, still looking on a 2d screen so no need for the other axis for racing. Flight sims and such, might need those axis though. Also, note how close my Thrustmaster wheel base is to my monitor. Being as close to your monitor as possible with greatly help with immersion and will make trackir feel just right.
All the best with your new purchase!