Classic Titan vs. Titan OneTouch

[QuestionGuy]

Does anyone have knowledge about the differences between them?

My original surgeon preferred and installed the Classic (I guess that's what it's called) and new surgeon prefers the "one touch" for my upcoming revision.

The pump I have (classic) involves pinching two walls together against a spring (like a clothespin)

Because I'm being revised after only 6 years of very infrequent use, I'm really driving myself crazy trying to figure out what may have been root cause of failure., so I'm wondering it one pump is perhaps historically more stable?