Ikons are a great shock and will give you a great ride, they will last a life time and they are also rebuildable, I brought a set for my project bike and look great on it (1960 Manxman), Ikons are the old Koni shocks and I have had them on my Norton for over 36 years and have only just rebuilt then for the first time last year, all parts from Ikon, my old Koni's look the same as the Ikons with the damper adjuster at the top and nomal spring adjusters.
If you want shockies that will last a life time of hard riding, go for the Ikons, you won't be disappointed, yes there are many cheaper shocks on the market, but you get what you pay for, Ikons aren't cheap but like I say they will last a lifetime.
Ashley