I started out with the Aladin Prime, moved up to the Tec and now also a Tec 2G. Great computers, also able to use in Guage mode. For General and Nitrox Dives the Aladin Prime is all you need. Some Distributors have been selling the Aladin Tec very cheap since the 2G has been introduced. Locally the Dive Shop was selling the Tec for $375 CDN.
Interesting enough I've done a few stupid things and my Aladin's and have never "SOS" me , locked me out or given me stupid Deco times (unlike my buddies Cobra). The other great thing is the batteries are $3.97 at Walmart and are user changable. I usually go through a battery every 15-18 months (125-150 dives) and we dive cold up here in Canada (32 degree).
Overall a great package, get a Tec if you can find one cheap. If not the Prime is awsome, the only thing is there is no Guage mode on the Prime.
Hope this helps.