English is usually possible, I don't understand Czech too. ;)

Seems like I had quite some bad luck with 3 controllers breaking in a few months.

I liked the warrior when it worked, not too good for crawling but if you want to drive fast it's pretty direct and puts out good power. Seems like Mike likes them too, so you will get good support and if BK delivers they should be available quickly..

Mtroniks seems to be based in the UK, maybe Mike can get some?

I don't like the idea of dual motors&controllers. It's expensive, you need more room and a bigger chance of one breaking.
Depending on your idea of fun you might be able to just buy one Novak HV and be done with it?
It won't be really fast but quick and quite a bit faster than stock.