Tranny Temp Gauge Inquiry

Its been quite some time since Ive purchased gauges last. Just wanted to get a couple reviews on the Stewart Warner 122281 Trans Temp Gauge. Its pretty easy to see and read and its prety easy on the pocket book for a daily driver Ramcharger. This is the Rig that will tow my 17' flat bed when i get the floor put on it. Its primarily a scrap trailer, but i want to know that i can keep tabs on the temp for the heavier loads. I havent used a SW brand gauge in ages. So Im not sure if they are still worth a fart or not.

Input on other inexpensive trans temp gauge brands welcome. Really haven't been able justify $60-100 for a gauge on a daily rig that doesn't see trailer use, but once in a blue moon. Maybe thats silly. I dont know.Thats why Im asking people more knowledgeable in this dept. than myself. lol