Ok I found something I don't like about the 100 with the tunze pump. It is working too well and now instead of having to clean the collection cup every week or two, when I was running the G2, I have to now clean the cup twice a week. This is horrible as you know that stuff smells like hell!
This thing has been great and only been a little over a week. It is working working so good and pulling so much stuff that it maked me wonder what the hell my G2 was going at all when I was running it. Definitely the best skimmer I have used and will purshase a larger i-tech when I get a larger tank running in my basement.