random music volume question Options

[Toyoca]

hey guys i plug my ipod into my headunit and because i didnt like how some songs come up way louder than others or lower and i gotta turn the nob up or down a ridiculous amount, i decided to use this program called mp3gain (heard about it in a mag) which adjusts mp3 files to the same volume. the program states that there is no loss of quality. but i feel like the songs sound "different" when i changed all the db to 89.

now i have another program that will adjust the volume of each song right until it is about to clip. i know that the individual songs will have different volumes but do you think theyll sound "better?" sry if this is kinda confused.