Buy a better probe. The silicone ones get disgusting from smoke even when they do hold up to the heat, and I've not found any way to clean them. Metal bodied probes hold up so much better.

As for the thermometer unit itself ... meh. The Solis, the Inkbird, and pretty much every other one out there is the same Chinesium "iBBQ" underneath (you can tell by looking at the app -- they're all identical minus some branding and maybe some additional styling). Buy for whatever extra doodads are added (built-in rechargeable battery instead of replaceable battery, waterproof rating, whatever) or the price, because the guts are otherwise all the same.