I didn' t expect so many answers - some of them being really instructive and exciting. Thanks to Sal for supporting the idea!
Let me shortly summarize the results up to now. As expected, there are many different suggestions - for obvious reason: there are so many beautiful Spyderco knives. Stiil there is some trend appearing:
1. statistically BG-42 wins by 50 % more votes.
2. suggestions go mostly to the medium size knives:
- Native , FRN, Micarta, G-10
- Delica, FRN, SS, and (proposed) Micarta.
- Calypso, again Micarta, etc.
Most suggestions are BG-42.
3. Large knives:
- Milie and Paramilie appear, D2 steel prefered,
- Chinook, BG-42,
- ATR and (discont.) Starmate , BG-42, etc.
4. Small knives,
- Dodo,
- Mini-Dyad (discont.)
- Dragonfly SS,
all in BG-42,
- D2 reverse-S Meerkat.
5. Fixed blade knives:
- Perrin, D2.
Generally, larger knives, Perrin, Military tend to D2, and small/medium tend to BG-42. Tendency is not, however, very strong.
Few more comments:
- I am surprised that nobody mention the 'old' perfect cutter, the Moran, both D2 and BG-42 would be excellent.
- if discont. models are allowed, then the Wegner jr. in BG-42 (my favorite), and a large Wegner for Shootist (custom Wegner was in BG-42, AFAIK).
- does it makes problems if one suggests an american BG-42 for the knife normally produced in Japan, e.g. a Delica? Sal?
- does it makes things worse if one suggests, e.g. a BG-42 Native, but with Micarta or G-10 handle? Sal?
- if it were alowed, woudn't it be wortwhile to consider, e.g. Native or Delica in BG-42 with Titanium handles? Sal?
Well, up to now, I would support Native/Delica in BG-42 with Micarta (prefered, to make a difference), G-10, FRN, SS, Titanium.
Thanks for so many good answers.
Franco