EQCompare shows you side by side tooltips of what you're looking at and what you have equipped. If you combine that with the new additions to RatingBuster, you will be able to easily see what changes in your stats.
Bonuses offers you both in one package.
Not to dig up an old thread but, could you please confirm that the all-in-one mod is called "Bonuses"? I've tried searching on Curse, but the closest thing that came up is BonusScanner. You can imagine the variety of results I got from Googling.