OG Kush, Purple Kush, Chem D & Sour Diesel come to mind...
Do it, you might have hermies, but if you grow out enough seeds, you could find a keeper. That is how you make an IBL. You might have to go a few generations in before it stabilizes.A Pre98 Bubba IBL would be sweet, it's one of the only plants I've come across in my limited experience that really stood out as a gem.
I've seen some serious dank, but Bubba is one of if not my favorite strain to date. Just my experience though, I have insomnia and it seems like whenever I have some Bubba around I'm sleepin' much better.
I have 4 Pre98 Bubba S1's to pop, but I'm not sure if it's worth making seeds from fems? If anyone could shed light on that subject it'd be appreciated.