Thanks! The DAW I use is Reaper. I've also worked with Renoise but mainly use it for quick demos these days.
As for synths, lately I've mostly used FabFilter Twin 2 because it has a fairly simple interface but still let's you create really complex patches. FabFilter One can also be a good starting point. It's a bit limited but if you add some effects plug-ins you can get pretty far with that one, too.
For the drums I mainly use Redux as a sampler and either use the instruments it comes with or some of the one-shot samples I gathered over the years.
But in the end it's mostly about finding something you like working with. There are tons of free plug-ins that do pretty much everything you need.