I am a boost maniac and have vintage ones as well as modern ones. Depending on what you're after I would suggest a few.
You already have an SD-1 which I love. One of the OG Standards for good reason.
A couple current boosts based on old stand by pedals are the SD 805 (TS9/808), and the MXR...
I like the BWs better because they have but more personality. They aren't near as polite and I dig that, The Solution is super clean and kinda neutral.
I dig Orange Modern as well but it might be too dark on the F and G for me. It's hard to say....sometimes I love it and then I go to the red and I am like oh hell yes this is aggressioooooooooon! Hahaha!