I'll put in my vote for a good soundhole pickup. The Sunrise is the top of the line, but can be hard to find. The Fishman Rare Earth is also really good, as is the EMG. The EMG is tough to get the string balance set, but once you get it dialed in it really works well. I would also recommend getting an eq pedal to go with any type of acoustic pickup. The onboard ones usually don't have enough range. I use a Boss pedal myself.
Hope this helps.