Replying to Pants for my dad

hey guys my dad is in the market for new pants and he wants something that is water proof and durable. he wants the "traditional fit" by that i mean not baggy and not tight. i keep telling him he should get a trew bib, but he thinks they are going to be to baggy. hes been thinking of arty'ex or how ever you spell it.  he want a shell or lightly insulated. so anyone with experience with tech pants, he could use some help.
he is about 6' and over 200 (not sure exactly)
and always +k for answers