I have this issue where I don't care about asking dumb questions. So here I go again. All I hear about is these progressive shocks....... What am I missing? What's the deal with these shock? Why are they so great? What do they do for ur bike? How do I decided which ones I should get. I'm in the process of making my bike look good and I was gonna just grab some chrome shocks but I was told I HAVE to get progressives. Someone please shed light on these for this newb.