Stamina Types

Hi guys, I'm new to the WBO. Right now, I need help with stamina types. It seems to me that when I look and professionally made beyblade tier list, they are good in and height. I'm not saying that its true though.

My my parts so far are:

Feather Face Bolt
Scythe
Kerbecs
(can't decide a track)
WD

These are the best stamina parts I have available. I only have 2 stamina tracks that are said to be top tiers for stamina. 230 and 90. Which one should I choose? Any help for this new member?
Hmmm, i think this goes into the Build me a combo thread:-

Here:-
http://worldbeyblade.org/Thread-Build-me-a-combo-2
after u go there please type all your beys and their parts and we shall suggest a combo for you.