We have one by our kitchen window that's a cheap knock-off of a Perky Pet bottle type feeder. We also have a Bird Brain blown glass feeder with glass flower feeder tubes and a Parasol Dew Drop spherical glass feeder with a bottom gondola. The one with the gondola tends to leak, drawing ants, the other two never do.

The hummingbirds favor the cheapie, probably because it has perches for them. Probably 90% of the feed from the two lovely glass feeders is thrown out. But the glass ones ARE pretty to look at.