TM, VSR10 trigger mech vs ECHO 1 M28 trigger mech

[God]

I have both, considering replacing the ECHO 1 with TM. Although the Echo 1 is made for a 510fps set up while TM tends to use weaker(to my understanding). Will the TM shear break sooner than the E1?

Essentially, does anyone know if the TM is going to be truly stronger/longer lasting than the ECHO1?

IF I use the TM box, I will modify the box itself to be a direct drop-in.

[B.O.P. Hawk]

Why would you change out the box in the first place? If you are concerned about the TM being weaker, then you obviously still have the original trigger set up. Just stick with that....