We used Zuma tours to get us from Jaco to Montezuma in Costa Rica. As we were running slightly late for departure they were happy to hold the water taxi (speed boat) for a few minutes. The staff were friendly. I would fault them on safety though. While I was never actually worried about safety, they made no effort to brief passengers on what to do in an emergency. I enjoyed the ride on the speed boat, and while $40 for a one way journey is expensive, it beats the ground journey in time by about 5 hours.