Can I get recommendations on the right pedal to put in front of my Laney cub head, a 15W class A/B British-voiced amp, in order to get more gain?

The amp doesn't like my Boss OS-2 overdrive/distortion pedal very much so I'm replacing it. How is the seymour duncan pickup booster?
I personally use an Ibanez TS-9 or a Fulltone OCD to boost my tube amp. I have each pedal set differently and use either one or the other depending on how much gain I want and what tone I'm looking for.
My Guitars
Squire Affinity Strat
Ibanez RG 350 DX
Fender Stratocaster MIM
Ibanez AEG20E
Tradition Guitars S2000F Pro
I run a Maxon OD808 in front of my Peavey 6505+ & ValveKing amps and it does a great job.