I have the Jobo and find that it is the easiest and best plastic reels that I have ever used. Same with the smaller Jobo 1500 series. I also use the CPA, which is why I have their tanks.
That said, if not using the processor, I would rather use stainless steel. When you state you could not get them to work for you, I am guessing you had trouble loading the reels? If so, get better quality reels. My Nikor, Kindermann, load just fine. I have recently purchased some Hewes, only test loaded film, and must say, I would recomend the Hewes.
The reason I would not favor the Jobo without the processor is the need to keep the tank rolling manually vs. a motor. Too much work.
Also, I think the SS is a bit faster, which is a minor point.
Good Luck.