I’m a fan of the simplicity offered by a single battery setup. My recommendation would be a X2Power unit from Batteries+Bulbs. I had success with a Group 31 X2P in my Tacoma and, when the time comes, will replace the OEM battery in my 200 with a X2P.
Years ago I started the below thread on the Tacomaworld forum and the discussion kept momentum well after my sale of that truck. Some good info within:
EDIT: I've decided to go with the X2Power SLI31AGMDPM Group 31 battery instead of the Odyssey PC2150. I came to this decision mainly due to the...
www.tacomaworld.com
Edit: I didn’t realize the OP was almost a year old; anyway, I hope this helps those reading this thread.