Elvisdoc,
The ETS 1000 may be the best skimmer on the market. I say this after owning and operating ETS 700, 800, Old 800, 1200, 1700 and the new 1000. Ironically the new 1000 is basically the old style 800 which is the first skimmer ETS every sold. There is something about the 5' stack that makes this unit skim like mad. Be sure to get the 5 gallon collection bucket. Personally, I think this unit runs best with the Iwaki 70 RLT but some find the GRI 520 or Iwaki 55 to be adequate.
My only gripe with ETS skimmers is their large size (OK, at least most of them) and the requirement for large energy thirsty pumps.
I recently took down my ETS 1200 and replaced it with the DAS EX-2. So far I do not think the EX-2 skims as much raw skimmate, but it does an excellent job and stands only 28" tall. Its cheaper and burns less than 100 watts to operate.
Let me know if I can help you with anything else.
Regards,
John