In that case keep the tacoma.
I would have to agree. I drove an 06 4Runner before getting the 100. I really loved my 4Runner......But, we have 3 kids still in car seats. That's where my decision to get a 100 came from. I needed more space.
We have a very nice Honda Minivan for mall duty, but the 100 fits everyone, plus the dog and gear for weekend trips to the mountains. Plus, it can go almost anywhere I'd ever want to take it.

It sounds like you've got what you want right now. I LOVE my 100, but I like the smaller 4Runners, Tacos and FJ Cruisers too. I'll say this, it's not a cheap vehicle to own. Once you factor in the price of the vehicle, mods to get you back to where your Taco is and 10-12MPG...... it's a lot to invest in a DD or once a month trail rig. But, if you're gonna really use it.... it's hard to beat!