Price: We had a group of 6 looking for a tour. Based on the reviews I had read on TripAdvisor, we decided to check to see of Scott's would have a better price. They did! Not only did they have the exact same tour that we were considering (Vallarta Adventures - Outdoor Adventure - IT'S THE BEST TOUR EVER, BTW), their price worked out to be about $15 per person lower than the hotel was offering. And the transportation was $5 each (pick up at hotel and return included). We may have been mistaken, but we thought the hotel was quoting more for the transportation, too.
Directions: We ended up having trouble finding Scott's. We took the beach route to get to Bucerias and over shot our destination by a few blocks which got us quite turned around and a bit confused. Turns out, it's actually super simple .. if you stay at the Royal Decameron (which we did) you just turn left at the very entrance of the hotel (where the security booth is) and walk down the street for about 15-20 min. Scott's will be on your left.
Recommendation: I would recommend you check out Scott's if you have a group and want to save a bit. They offer pretty much every tour that the hotels offer plus a bunch of private fishing tours etc. Worked out great for us. :-)