rs80 or rs100? need reviews fast, thanks!

[Matt]

I've got an RS-80. It seems to be OK. Better than the undersized model I purchased as a stop-gap.

<hijack>The ER skimmers state emphatically that the output tube must be above the water line, but I find that makes mine too noisy, so it gets submerged. If you have one, how is it set up?</hijack>