Product opinion changes from not good to good?

What product did you initially think you did not like and then later decided it was a better than originally thought?

Mine was PO85RD. Until I got to use it on my Flex, it never seemed to do much on my UDM 1.0.

 

Meguiars D151 I thought it was ok but after the KBM and an Orange LC pad changed my view

 

i always thought optigel was pretty good until I started using AG CWC and what a difference for longevity and look

 

VX5000 Steamer.

 

Megs Last Touch...it turned out to be better then when I originally tried it...