If you are getting 9.1 then you have your antenna pointed towards downtown, where KCAU currently has their antenna (on top of the Terra center). To get KTIV, KPTH, KMEG, and the 3 Sioux Falls stations, you need to have it pointed North, North East towards Hinton. This will mean that you will probably not get KCAU any more as the antennas are uni-directional. Also, "front" on your antenna is most likely NOT the area at the tip of the "arrow", if it is like mine (and most others), front is really the open end of the arrow V. You also need to really play with it, as like rmullin said, moving it an inch or two can make a huge difference, which is why I currently have mine mounted on a tall pole outside my house where I have the ability to actually turn it to "tune in" the reception so that I can get all of the stations with a little effort.
As far as cableone goes, I'm a bit biased because when I signed up for the Digital bundle, I was told that I would always get the digital package with their fastest internet. When they went to 5 meg, they did not upgrade the package, nor did they lower the price, which means that the price really went up by $20 a month.
But anyway... The non-digital channels looked so bad on my HD set that they were nearly unwatchable. The Digital channels looked good, but there is only like 20 of them. Their HD selection is poor, and they charge the price as Dish Network does and you get 3 or 4 more channels then you do with Cableone. So, between the poor image quality, limited HD channels, and the fact they were real jerks over the digital bundle thing, I switched to Dish Network for video. I kept the 3meg internet through cableone, went with the Dish Network 180 package, got HBO, added MAX, added HD and another receiver (3 total) and I am only paying about $10 more per month then I would have through cableone without MAX and only 2 receivers. With Dish I am getting all digital channels, 3 or 4 more HD channels, 5 channels of MAX, 3 more channels of HBO, and the additional receiver, which IMO is well worth the ten bucks. Cableone is a hugly better value then AT&T or Comcast though