116655 or 126655? Advice please

[Bemyself]

Impossible to get it from an AD so going used or grey. 116655 can be purchase 22 k usd and 126655 can be bought at 27k usd. Both are used.
116655 is a 2016 model while the 126655 is a 2021 model.
My questions are:
1. Should I buy the 116655 as it about 5k usd cheaper and I’m ok missing out on the 72 hours and the glidelock
2. Thou 116655 is cheaper but it’s 8 years watch compared to the 126655 which is 3 years. Should i spend 5k more on the 126655 as the watch is still new and under guarantee while the 116655 is already 8 years which I’m worry about the wear and tear.
Your friendly and unbiased comments please. Thanks