Thanks. to narrow down preference. I'm looking for a computer that satisfies (as best it can) the following: compass, spg, time, temp, depth. Dive planning assistance (timers, limits, safety stop notification) warnings, alerts, bright and easy to see display. Air, nitrox, trimix capable. Pretty much a computer that will replace
all guages. Any thoughts?
you're going down two different paths here. if you're looking for a bells & whistles recreational computer, you can get compass, pressure, time, depth, temp, dive planner, warnings, bright and easy to see display, air, nitrox. one that comes to mind is a luna/sol, but i'm sure that's not the only one. i didn't like mine, but larry does.
however, once you want trimix - different ballgame. yes, i know the luna/sol has come out with mix, but when you run dive planning, the algorithm is much slower than vplanner or dplan. like 20 more minutes on the first dive slower. so it is still a recreational computer in my book. plus, once you're diving mix, you likely have different tanks with different mixes on each dive, so hosed integrated doesn't work and you won't be diving that many transmitters because tech divers for the most part don't trust integrated computers (unless they are integrated into their rebreathers by fischer connector).
basically, if you want something for rec diving, i'd suggest a simple nitrox computer, maybe with two gases. a nitek plus got me through advanced nitrox/deco procedures. if you're looking for a mix computer, wait. if your dive number is accurate, that's too much to spend right now for something you won't get the use out of, and when you get there you'll want the newest thing anyway.
you're asking for the equivalent of a car that will haul groceries and three kids, win at le mans, and carry your grandparents in comfy luxury. pick what you need and a bit of what you want.