RF 24-105 f/4-7.1 stm or EF 24-105 f/4L usm
Confused between these two lenses. My canera body us RP and I found the f/4-7.1 for $319 et canon (refurb, new is $400) and Ef f/4L for $450 at mpb (excellent - refurb). Is it worth getting the EF as it is going to be more costly and I will need an a...