4.2 lever change

I just did a 46RE, surprised it originally had a 2.5.
I was surprised they went that low.
. someone here sent me (I think it was)a 3.2
Maybe a 3.8? I was thinking about a 3.8 or a 4.2. but a 3.2 even I would think would be noticeable, being a factor of 1/3 more than the original one was..... Daily driver 4wd mostly driven by my wife, sometimes I tow the camper with it.... I was thinking 5.0 would be too much but I don't know a lot about exactly what a ratio change there really means