3.73's aren't enough, 3.90's make people who get them wish they would have gotten 4.10s in the end (in many cases). Go with the 4.10s and you'll be happy.
I still say 3.73's are the best all-around gear. Sure you get a little more tq-multiplication with 4.10's, but 1st gear runs out VERY quick, and if you dont have drag radials at least your ET's wont be significantly better but your mph will be.
There isn't much an rpm difference between 3.73's and 4.10's to worry about. Only a couple of hundred difference between the two at 70mph. Go with the 4.10's