Sounds like you were not trained correctly about progressive lenses. They are the closest thing to a "one lens for everything", but they do have some limits. They are not for everyone. "Move your head instead of your eyes" is how they are designed to work. If you were not informed of that, your eye specialist is not doing his or her job. Also, if your optician did not discuss different lens options and their advantages, they did you wrong.
I do recommend progressives to patients if they have never worn bifocals but now need an add power in their Rx. However, if a pt. has been wearing bifocals for a while, I normally will not suggest changing. It just depends upon the patients needs and life style. Personally, I prefer bifocals over progressives because of my Rx, but use "distance only" glasses when I ride so I can have a larger field of view. I know that will change someday and I will need bifocals all the time.
I can tell you that you really get what you pay for when buying glasses. The more costly progressives will give you better optics with less distortion. You may also get a little larger "beamwidth" with the better lens. I wonder what lens material you ended up with. To bad you don't live out here in wine country, we could set down and talk shop and bikes. That would be fun.
BTW, My first bike was the baby brother to yours. A R60/6. I miss that bike.