To go custom or not on a steel 29er of not?

[kbteachme]

Originally Posted by chumbacabra

i am 5'8" and 220 and looking at getting a 29 steel hardtail. Since the flex in the steel is going to be my suspension and I am heavy, I am wondering if you guys think that a custom built steel frame will give me a better ride? I am concerned that a production frame may flex too much while pedaling. I know that a good custom builder can address this, but will I notice a difference?
Would anyone suggest a custom frame builder?

You should also check out MINT and Carl Strong.
http://www.mintcycles.com/
http://www.strongframes.com/