I recommend you get a computer. For a fairly new diver diving tables, you will likely run into some problems in the Caribbean region. It's probably expected you're going to buddy dive. Diving tables generally assumes you will spend the entire dive at your planned max. depth. If you don't have the table with you underwater, and decide to drop down 15 feet deeper than that to get a look at the really big hawksbill sea turtle eating a sponge, oops!
But the real problem is that most people will be diving computers, and nobody likes their computer-determined dive time cut considerably shorter because their buddy is diving tables. This leads to the temptation to dive with your buddy, relying on his/her computer, which is frowned upon in the hobby. So unless you've got a tables-fan buddy who'll be with you on trips, get a computer.
Whether & to what extent Suunto's are 'too conservative' has been debated strongly on varied threads. Historically some have reported it varies with the kind of diving you do, with Suunto's allegedly 'not liking' saw-toothed profiles (a lot of up & down). I don't see any major advantage to getting one, and some consider there to be a disadvantage, so I'd get something else.
Okay, here's a question that has come up before - "If I may comment about Suunto's. I'm really not sure why everyone is so against conservatism."
And it's got an answer!
1.) A liberal computer gives you a 'generous' NDL. You have the freedom to come up well in advance of it, or you can decide to push it.
2.) As long as you don't exceed your computer's NDL, when you get back on the dive boat, the dive boat staff (who often pay some attention to such things) will not stop you from doing further dives that day.
3.) If you do exceed the NDL, your computer may sound an alarm, show a violation, and back on the dive boat, staff might prohibit you from diving ('bench' you) for some period of time.
4.) With a conservative computer, you've got a shorter NDL and you're more likely to violate it & trigger an alarm, especially if you're diving with a group or buddy with more liberal computer(s).
In brief, a more conservative computer makes you get out of the water faster, and a more liberal computer leaves more to your discretion, so exercise that discretion in how you use it - level of exertion, water temp., physical condition, etc...
Richard.
P.S.: While a lot of diving is gas supply limited, some areas feature a lot of deeper diving that's more likely to be NDL-limited; particularly off-shore wreck diving out of North Carolina, but also drift diving out of Jupiter, Florida, in my experience.
