hi guys, so im wondering whats the diffrence, i can here in town get a decent brand kit of probe and the guage for about 100$, then i see theres probs and i dont know if there for snowmobiles, i search in google snowmobile pyrometers or snowmobile egt gauges and stuff and they want 300$ for a "quick responding" probe and stuff, so not sure the diffrence/s if it really matters at all?