I never use guys who cost more than $10m (except RJ on occasion) and I rarely use guys who cost more than $7m. Better in my opinion to develop a balanced line-up using guys in the $4m-$6m range.
I got Beltran in Dodger stadium. I mainly wanted him for his defence and base stealing. His OBP was below .300 but now it has went up to .327 in about a week.