I have a few more piece of gears on my list actually.😄
For the volkas I bought 4 used for the price of 2 new (2 years ago).
beats, fm synthesizer, bass and sample but I didn't use the volka sample yet by pure laziness. I used all the other ones in my music. The volka kick sound really close to the beats one. I am sure it's better because it came out after.