The only real difference between the #1 and #2 is that you have to take the cam bolt out to adjust the rod end, if required, on the #2. They are both double adjustable. The bushed arms they sell are also nice but the price difference is not enough to steer me to them....in the grand scheme its only $40-$100 difference....not very significant.
I have not run the bushed tubular arms but if the washers they are using just go on either side of the bushing, that is a good thing. It gives the bushing a nice flat surface to ride against. It may be that the bushings are generic, so to speak, and work for our app with the washers centering them up. It really is not a problem.
