User blog comment:Milesprower2/PvZ Math: Best Boosts/@comment-1716189-20141230115338/@comment-5792287-20141230133612

The only defender that's much use to boost is Infi-nut, and while it's almost needed on BWB levels with Fishermen, the boost isn't needed.

As for Potato Mine, Chili Bean and Squash, they are highly luck-based, as they may dump their duplicates on bad spaces (or squash the zombies you don't want squashed).

Torchwood's a prem that I haven't bought, so I've never experienced its boost anyway, and with no crowd control, I'd rather have the PvZ1-style Torchwood than a boosted PvZ2 Torchwood.