The thing I've noticed about overdrive is that it sits in different places in the EQ spectrum, and everyone's idea of "good tube drive" varies greatly depending where they like the OD to be in the spectrum. The B3K is definitely more high and high-mid focused, adding a lot of attack. The SFT and Aguilar Aggro are aimed more at the lo mids for a muddy breakup. Without knowing your exact tone goal, its hard to judge.
I picked up a used Pork Loin years ago and I just can quit it. The sweep, tone, and blend options really make it a great low drive pedal. It takes a little patience, but it can do a lot.
I had a B3K, and if you are looking for something that will add to your attack, its great. I had trouble making it work in a mix and it wouldn't behave in the studio, so I sold it.
The ability to blend in a clean signal is a must for me, so I have an LS-2 and a custom built Broughton blender. With that I've used an Abominable Electronics Hellmouth, which is a refined version of the TS9 and 808 circuit with an additional gain boost and clipping section for leads. It is pretty transparent and has a lot of nice sizzle to it without getting too barky like the original TS9.
An OCD clone like the Demon or Olde Dirty Bass are also really nice with a blend, so they are transparent while doing what they need to do. They are a little harsher than a typical "tube" OD, but they are my go-to for snarling drive with a little extra junk in the trunk.