Thanks everyone, lots of good advice. I had a look at the Dragonfly and it's a sweet little knife. It has just been added to the list.

I will do some more thinking on this, but am leaning towards the Spydercos - either Dragonfly or Tenacious.

Just a question for Sharp - The people at Bladeforums speak very highly of the BM Mini Grip, but you say to stay away from the 555 series. Which one would you then recommend except for the Tanto?

Best Regards,
Gideon