For a couple of years I rented. Over the past 3 months or so I analyzed and read every review I could google about a beginner/novice dive computer. I even have a friend who works for Scubapro that may have been able to get me a deal. I debated and finally made the plunge. Posted a wanted Shearwater Petrel on SB and within a week bought a used Petrel 2 at a reasonable price. Yes I could have spent a few hundred dollars more but most likely I would either replace it over time, or spend $100-$200 over the lifetime replacing batteries through the LDS. Furthermore, a $200-$400 dive computer is virtually worthless on the used DC market. I have not yet dived with the P2 but heading down to Bonaire in a month. I've been on every screen, upgraded the software version via bluetooth and changed the battery. Incredibly intuitive and easy to operate. Oh yes, I reached out to Shearwater directly via email and they responded within 24 business hours. I'm looking forward to diving a lifetime with this used P2. Just my long winded 2 Canadian cents. Cheers.....