I was just curious what most of you on ballreviews.com believe is the ideal pin length and top weight combination when purchasing a bowling ball and why?

Personally, I'm partial to 2-3 oz of top weight and 3-4 inch pins due to the amount of friction I typically encounter in the South. This set up usually helps me get easy length with a nice readable pop in the backend.

Depends on the layout. For me 2-4.5" pin with 2-4oz top weight will work for most of the layouts I use.

Usually I prefer the longer pin when going with a pin up layout and a small val angle and longer pin to pap layout. So I can get the cg closer to my center grip line with out having to worry about too much finger weight.( I don't use finger inserts)
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Be good, or be good at it.

All depends on the drill and if I am going pin up or down. Due to my span if I am going over the fingers have to have 3.5 or longer, most times use a 4". Pin down I go 2 -3 and then have to use the pin and CG to determine what I can do with that ball. Since I buy direct from 900 tend to get a lot of balls that are pin out and at times a couple inches so changes my plan many times.