Ryan, i would go with a portable and use your oreck to agitate before cleaning with your portable. A 175 does scrub the carpet alot better than an oreck. i carry a 13" 175 on my van to pre scrub very nasty carpets. i used to have a 17" 175 it was too heavy to be carrying every job. It did scrub really well but in a residential setting i could see people damaging walls and stuff just carrying it into jobs. so a 13" 175 has been my best investment for scrubbing. does a good job and is a smaller foot print for residential jobs where i need it.
I'm not there yet. But the goal is not to steam, scrub and agitate dirty carpets back to life. Goal is to go into high end homes and clean clean carpet. Yes clean carpet and upholstery that is already clean.
I don't have an orange one. I bought a green one for it and I'm experimenting with it. with the green brush it works well on rat nasty carpets, not as well as my 175. The oreck is fantastic on stairs, but the black brush comes up short on tough spots. The bonnets and pads have issues with the driver at times. They are also pretty abusive when they need to be changed or flipped. I use the red pad and the green brush for my oreck and use my 13 inch 175 when using pads/ bonnets or brush.
I highly recommend the Cross American machines. I started out with the old school portables and then went to truck mounts for about 20 years and have recently returned to portables and after much research, decided on the Jaguar 8.4 and I couldn't be happier. Today's portables are light years beyond the old school 100 psi machines of 15 to 20 years ago. The power of my Jaguar is comparable to my truck mount. I have had no trouble maintaining the high quality my customers demand, which to me was one of the most important considerations. This machine is built like a tank and I fully expect many years of trouble free operation...another important consideration.
We use Oreck orange brush on tile. The oreck is a versatile machine to help with encap, agitation of traffic lanes, tile etc and it can be carried with one hand. It's not a replacement for a 17" 175 or even better...a CRB but you can carry it with one hand. It's awesome for touchups, wicking edging and under desks on commercial work. I think it should be on every truck.