If you are doing straight cuts, then a blade saw will generally give better quality cuts. If you need to cut more intricate shapes (curves, etc), then a band saw is the way to go. But for straight cutting, the thin bandsaw blades can be a bit flexible and wont do quite as well for those really neat straight edges.
This may be a factor to consider - eg. for flat lapping on an oscillating or vibrating lap, then results will be much quicker when the cuts are very good. Or for your particular work, it may be less important for consideration.
cheers
Leah