Thanks for all your replies! My pkg 'should' arrive today, and we got a big fresh snow dump. The UPS guy will have to trudge thru it on our long uphill driveway. He is gonna be
really aggravated 
Maybe I could let the dogs out to escort him to the door

I don't know why he's so grumpy, my big dog greets him so enthusiastically

@monstermonkee & deeda, I've been doing it wrong and sucking filth all these years? Lol, I'm still alive.
@Mavrick813 I considered the 2075, but read lousy reports.. leaks and floods being the eliminators.
@Oughtsix you sure have lots of variety there. I dunno how big your sump is, compared to the tank, but sumps' additional water volume decrease spikes and increase the amount of bio-load a tank can have. for oxygen I can increase surface turnover w/bubble airstones etc. Emperor 400, I have on a 20G, it's OK but I hate the finicky impeller. Pothos clippings & such-like are a no go with a canopy (even tho I leave it off half the time, lol).
@Eupterus ya, two is better and more flexible than one for sure. have to admit, planning to start a bigger tank played into my decision.
@Hot Slime thanks for link! Ya, Classic E's won out for reliability.