Yeah, I wish there was a better way to figure out which gloss level to go with. On my last couple of orders I was thinking about getting one in satin and the other in semi-gloss... but when I went to order the second pair I thought I had ordered the first pair in satin, while in fact I ordered both in semi-gloss.
So I'm not much help, other than to point out that the paint aisle in any big box store probably has a bunch of wood samples with different gloss levels.
What I can say is that for knotty pine semi-gloss looks great, while for cherry I'm thinking satin might have been a better match. I was initially thinking that the pine trim in my house was semi-gloss, but looking at it again it is probably satin as well.
Guess I should have checked the old paint can in the basement