Bonneville T120V '72

Hi, I am new to Triumph, being a longtime Norton owner!!. I have on loan and am possibly going to buy a 1972 Bonneville t120v.
However I have read some negative things about these early 'OIF', 5 speed bikes and would like any feedback. The bike I have is a late '72 build with the lower frame, rides well and is in good condition. Is this a bike to be avoided??? I hope not as it goes well and looks good!
Also, this bike is a T120V. What is the difference between it and a T120RV?
Best wishes,
46dodo, Don