I Use exclusively Olson blades. If you use soft wood like Iggy does (Poplar, pine) the Mach speed are great. #3 or #5. But for hard wood Like Maple, Cherry, Walnut or Oak, I use Olson PGT #5, #7 or# 9. Depending on the thickness of the wood.
For the Filigree hummingbirds, I would cut it on a 1/4" or 3/8" thick Oak, oak ply or BB. The blade I would use would be #5 or #7 PGT (Precision Ground Tooth). they leave an almost polished cut and would need very little sanding.
For the Hummingbird pattern, If you cut it in 1/4", the the same blades as above. If cutting from 3/4" hard wood, I would use #7 or #9 PGT.
Those are my preferences and the blades that I trust the most!.