Is there a better EGT sensor

Sorry Fred - no one seems to have any constructive advice for you.

I too have had my EGT sensor problems, however even the cheapest/nastiest seem to have lasted several years BUT then my aircraft was only flown by me, so max 100 hrs/annum, usually substantially less.

How many operating hours are you getting out of a pair of sensors? 

The last pair I installed (came from the USA) were by far the best in terms of sensitivity, consistency and longevity. Sensors on the front two exhausts pipes, were wired up to a old style dual indicating analogue gauge.

I also have had problems in the past and found it was dependent on luck to find good ones.

Vibration can also be an issue, so good Carb balancing, idle at 2200 rpm or more, prop balancing etc all help..

I would have to look at my logbook but it seems like I just replaced 2 last year and one this year. It just aggravating to cancel a trip , pull everything apart and trouble shoot it. I always keep a couple on hand now a days. I am pretty sure dynon egt are made in China

http://thesensorconnection.com/category/egt-sensors/all-egt-sensors

At least eight years ago I decided the passive EGTs everybody had been using on their ultralights were just not good enough so I did some research. I found that I needed an instrument utilizing 12v power. I can’t think of it’s brand name but it’s out in the hangar if somebody wants to know. 
The instrument did not have sensors but they gave some suggestions and I went with the guys at the link above. That was on my 503 DCDI and has been one of my best moves to date. I also bought their CHT sensors- great performers.

When I got my S12 with its 912UL, I bought 4 EGTs from The Connection to interface with my EngiBOX and they likewise have worked great.

I recommend them and also would note that they have very helpful tech engineers who will discuss your particular installation and instrument situation with you.

Update 

I found a egt probe that is priced right and seems  to hold up.

westach.com. They make them for about 60 bucks. Very nice people