Thanks for the comments. I got two rolls of Velvia developed at the same time, and the scans from the efke look great compared to those, but that's not exactly saying much. The results I typically get having them scanned with a Frontier scanner are better, which aren't even close to what I've seen from good dedicated film scanners.
I can't seem to save up the 600 bucks for a scanner, and now that I looked at the pictures of Gabriel M.A.'s Hasselblad in the classifieds, I don't even know if I want to invest in a 35mm-only machine 😛