Edit: Both sold out online. Click & Collect only. Check to see if available in your area.
Someone recentally recommended the Oral B Pro 2 2000 as an all rounder toothbrush. I'd been searching randomly every other day and today found this deal on Priceline for $39 which is the cheapest I've seen.
I also stumbled upon the Smart 5 5000 for $59 which seems like a decent deal so I ended up getting that one.
Click & Collect or $9.95 shipping. I haven't really posted before so let me know if I've done this right.