Hi, and welcome to the forum – go to the introduction section and make an introduction post π
You should explore the forum and use the search function for this π I believe this topic has been covered quite well in previous posts.
DDJT has an extensive list of test, reviews and walkthroughs on most of the up to date controllers. Have a look at http://www.digitaldjtips.com/dj-controllers-gear-buyers-guide-2016/. You’ll also notice that there are both written- and video reviews of most of the units.
Quite a few units give you a full ready system without the need for a laptop, so it usually comes down to features and knobs you’d find most fitting for your style and workflow.
Best of luck, and keep us updated π
BR Tord