Thank you to you both.

Flexibility for USB port plus FX if I ever change.

Shame about the bokeh then.

So the Nikon lens would have been my best bokeh, but I would not have been able to auto focus. I think I could have learned but I appreciate
arthurking83 posting their actual experience/preference for the Tamron.

OK, last part of the purchase ( I hope)

What are the essential accessories I need with this lens?

Eg.

my tamron f2.8 18-50 has a UV filter, lens hood, and graded filter (that cost $100.)

I carry in a bag and would love a proper photography backpack but assume I will just wrap my not-in-use lens in a jacket in my normal backpack.

thank you