It looks like the box comes with the standard pro probes. The extra you got are the waterproof needle probes that are good for sous vide.
I have been testing the needle probes for a few years now and had planned on doing a review, something more than a first impression.
I went to the needed probes because they are much easier to poke into the meat and place them where you want them.
Other than ease in puncturing, the main difference is that they have a lower maximum temperature limit (500 deg for handle and cable compared to 700 deg for the High Temp Cooking Probe). This has not been a problem with the type of cooking I use them for.
The silicon insolated cable is holding up really well. I have seen no wear.
I had a set of probe failures with my original high temperature probes which I attributed to a batch issue. Thermoworks replace them and I have had no other issues. I have not had any failures among the needle probes that I use.
I recently checked the calibration of all my probes, and they are still hitting boiling temperature correctly. I have quite a few of both types including several of their Q-Series probes.
One piece of advice that tech services gave me was to try to keep water out of the probe/cable interface as much as possible and to hang the probes to dry before putting them away. I am guessing that this is less of an issue with waterproof needle version than the high temperature and ambient probes.
My conclusion after using both for at least a few years each is that I would continue to buy and use the needle probes. Pocking through some meats, especially skin, with the high temperature probes can be difficult. The high temperature probe is probably a good choice for high temperature grilling in your Egg.