I prefer the Inpulse 500. The colored performance pads alone are worth it, both for the DJ for better orientation and visually for the audience. The White Edition is particularly recommended from this point of view.
@djjoejoe Even if the Flx4 is somewhat lighter and smaller, the Inpulse 500 is still very compact and not significantly heavier to transport in my opinion.
@Michael_Wisniewski The Flx4’s USB C port may seem like a good idea at first glance, but in practice it doesn’t offer any advantages. Yes, you can also charge your smartphone or tablet this way, but you can also connect the charger to one of these devices and the controller will be supplied with power via it. Ultimately, you don’t save any cables or power supply units. In addition, the cable is quite easy to pull out. Depending on the location and accessibility by guests, this can sometimes be a disadvantage.
I also use an external mixer, but this is generally independent of the controller used. In this respect, I would like to agree with this recommendation, at least for the mobile DJ.
Both controllers are good devices in this segment with largely comparable features. In the end, a decision like this is primarily a question of personal preference. If you value the standard club layout, the Flx4 is of course the first choice. Overall, however, I think you get more for your money with the Inpulse 500.