The one Spyder that I EDCed for almost 2 years was the Spyderco C-44 big Dyad and it was truly my all time favorite for Every Day Carry. I could get by with the upcoming C-44 Dyad that they are releasing a Sprint version, VG-10 bladed model. When it is finally released I've got the funds for 2 of them>> one for EDC and one for the permanent collection.
Most people just don't realize how many cutting chores you can do with the big C-44 Dyad model. It is truly the best of Both Spyder Worlds with one clip point, plain edged blade and one sheepsfoot, full Spyderedged blade. I truly could get by with that model only.
The C-44 Dyad is truly their "Do All" model. I hope down the road that Spyderco will do another 2 bladed model at some point.