Shank connection

[macminn18]

I ordered some perlick/shank combos on Black Friday special. The shanks have the nipples on them. I'm building a tower, was hoping to use Jon Guest fittings for the 90 degree elbow.
Trying to figure out how big of a deal it is, or if I should just use what I have. How often to you have to take the tubing off the shank? It looks like the ones with the nipples are cheaper, can't figure that out.

 

[microbusbrewery]

IME you rarely disconnect the hose. I had one of the shanks with nipples in the past. I've since switched to stainless shanks that use tail pieces. The reasons I switched where mine was plated brass and 1) I had used it long enough that I could see the plating was wearing off and the brass was starting to show through (faucet mounting area), and 2) I upgraded from a fridge-based kegerator to a keezer with a coffin and the shank was too long resulting in a fairly sharp bend in the line. So just my two cents, I don't think it's a huge deal as you'll likely seldom remove the lines but if it's plated like mine was, you'll eventually replace the shank.