I want to rebuild my arsenal with 2 new balls
right now my arsenal consists on:

storm pyro (Heavy oil)
Hammer road hawg (to open up the lanes,very condition specific ball)
Track slash (medium conditions)
power groove dry/r (dry)

The real thing is like on 95% of the time i bowl on medium to dry conditions where my old slash works pretty well,but the thing is than sometimes i want to play a little bit deeper with my slash and i get short,and if i switch to my pyro its too much,so...
I was thinking of 2 new balls one to replace my pyro for heavy oil (i have to play an international tournament with doble pattern one long and another short),and the other one to be one step down of the heavy oil one,and over my slash...and maybe spend a little bit more money and get another ball to dry conditions because my groove dry/r its not my favourite.
I heard good things about the tropicals but some people says its too strong.
I am a very versatile player,i can play anywhere between the gutter to the fifth arrow,the thing its my higher speed can get to 17.5 mph,and most of the time its around 16.5
Thanks a lot in advance and sory about my english i am from argentina
jonah300