clickinc is a big scam it is run by some pharmacies so if you sell anything related they will cherry pick your affiliates. beware. Anyone who wants proof pm me and I will forward you the details.
I will suggest you to compare the feel good features that you will really need during the affiliate marketing, such as linking options, CRM tools( you badly need to help or inform your affiliates), commission management tools etc. You should avoid the gimmick features which you will hardly use. You can see the demo of IDEV, Euraffiliates, PAP, JAM and see where you are comfortable. Euraffiliates is a newer one in the race and bundled with some new features. But IDEV and PAP are most popular.