I am also old Logitech fun/ active user. Right now I use old Logitech MX Revolution… I like this one for a programmable buttons and long enough work time. I think I charge once for a couple of weeks, using it 10 - 12 hours each day. It’s old 
, with some crack across a button- because of hits against the ground… But I am in love with this mouse. Some times I am also trying to find something new but can’t find another one, which could inspire me some much that I would spend 100 EUR for it. Especially after reading comments about those mouses - low battery life, broken buttons, etc… So I think i will use mine MX Revolution till the day it die completely