are mth's realtrax 0-72 remote switches trouble free ?

I only have experience with the 0-31 switches, but have found them to be certainly as reliable as any other switch i.e. useful, but not bulletproof and generally quirky. If you search "realtrax switch" you will see that this is the consensus. Here are a few links:

https://ogrforum.com/d...ent/2415514337037899

https://ogrforum.com/d...ent/2415514337033283

https://ogrforum.com/d...nt/11003700275929407

https://ogrforum.com/d...ent/7906207207071524

https://ogrforum.com/d...ent/8187868219321841

https://ogrforum.com/d...nt/12129988017791841

https://ogrforum.com/d...ent/2415514336700189

https://ogrforum.com/d...ent/2415514336932518

https://ogrforum.com/d...ent/2415514337041499

I have 26 Real Trax switches on my layout. 3 of them are 072. They have been in place for over two years and I run my layout pretty much daily. 

I have not had any problems at all with the 072 switches. Be sure to install them properly and you will not have a problem. I run all types of rolling stock through them and diesel and steam. Backing up long consists through the 072 is not a problem. 

I have 25 of them and have run on them since 2002 with only one that acted up and had to be replaced (wouldn't switch smoothly).  Joe

Out of 6 that are about 6 years old, two throw slowly and dim the lights (tried different controllers and wires, no solution) but still work, and one works with the motor on one side only. Usual magnet falling out problem and needing reglueing, like many Realtrax.....other than that, ok. Due to the radius, they do not derail the trains as badly as the O31's do, and they still have a dead spot for some locos.

My experience. But, mine do go up and down for the yearly Christmas layout, that could explain some problems. Taking it down next week.

Greg