The good ones are, but they ain't cheap. If you have all of your incandescent floods on one circuit you should be OK with 14-100 watt bulbs as long as there isn't anything else on that circuit. 14 - 100 watt lights draw about 12 amps.
I would look at the Par 30 and Par 38 selections. You can get away with a Par 20's for individual props but the 30's will be more dramatic. The Par 38's will illuminate a nice broad area and are excellent for back lighting or a larger display area.I cannot seem to find any flood lights at minons web, only spots.