So I did that a few years ago. I bought and sold over 20 overdrives over the course of about 3 years. I landed on keeping 3 of them. SD1, Grid Slammer, and a basic Tubescreamer. The SD1 is so underrated it's not even funny. It gives me asymmetrical clipping - really great for boosting highs like a Fortin 33 but not as shrill. The Tubescreamer gives me the normal TS / 808 style boost that works so well with rectifiers and Badlanders. The Grid Slammer is for when I want a TS type of sound but a little bassier/woolier as it allows more bass to come through than a standard TS.
Those 3 really do it all for me.