Sorry, I missed the other questions.

Yes, when my tank was brand new I was upset about the micro? macro? bubbles. I had read somewhere that cutting the filter in half would help with that, so I did on initial setup. Red Sea also has an online tutorial on things you can do to minimize the bubbles. Personally, I think the bubbles are the result of a new tank. I did some things, but ultimately - TIME - seemed to be the best answer. maybe the filter gets a little clogged and that stops 'em? Anyway, as long as I have my tank filled properly, and the adjustible overflow set properly, I have no bubbles in my tank.

Red Sea makes tanks with plastic trim in BLACK or SILVER. I have a black tank, it came with a black stand. The stand is very well designed for a KD kit. I would assume the silber tank would come with a silver stand. The stand is definitely paintable.

Their skimmer is OK. It is a tight space, and a small skimmer. It was suggested to me by Anthony Calfo that I didn't really need to run that skimmer all the time. I have a VERY LOW bioload. Basically, I turn it on for a day after each water change, and that's about it. I am a bit meat-fisted, but still the inner workings are remarkably accessible. I took out the the little ceramic donuts early on at somebody's suggestion. Now, I don't even remember why. But, I have had good luck with everything, so I won't be rocking the boat on those. Change the carbon perhaps every other month. And, after the skimmer runs for a day, I take out the cup and rinse out all the yuck.

I don't want to sound too much like a shill for RSM tanks. I do like mine a lot, but remember - I have zero experience with other tanks out there. The price you are thinking of is a fair price. Possibly not a GREAT price. I have seen them available on eBay in the past - and they normally don't have RSM "start up kits" - substrate, salt, test kit, etc, because they were used up by the original owner - but perhaps you don't need that stuff anyway.