Hi all forum users -

I am fairly new in here and to horse racing so my questions may appear stupid...but if you dont ask you dont find out.
My query is races to eliminate.

Numerous postings have chatted about not betting on 2yr olds, 3yr olds, maidens,hurdles,cups,classics and other black tie type events..

But ..where do we draw the line with the rest of the races other than those mentioned.
I concentrate on BM63+ and Class3 + thus eliminating a lot of what I consider hard races to back on. Am I to harsh or to soft with these filters?
Another question that might be answered by a lot of learned punters in here is... which classes do most of the long priced winners come from?

Hoping for some help
Regards
Ted