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The Galileo Sol is a recreational computer. If you desire a tri-mix computer purchase a Shearwater. As the old saying goes - "Jack of all trades, master of none"...
It moves past the recreational range as soon as it (and the others) adds mixed gas support, IMO, even if I probably won't like the algo. As I stated above, I'll stick to my X1's for tech (one is also on all my dives), however, if someone who owns a SOL decides they might be interested in extended range dive training and doesn't have the money to throw down for an X1, Shearwater, etc, it will be great for them to get involved with.
Maybe a bit off topic: With regard to the Shearwater, what were your reasons in going with them? (They are great dive computers - my second choice, and just really personal preferences)
A 4th button, and a differe nt screen technology are both in demo. The software debugging based on the re-write (not what we'd call a patch or upgrade... it's a re-write of major proportions), and color [change of priority/direction due 2 other major competitors coming out with polished full color units] have been a basis for the delay.