Come bets. Far superior, even on 6&8 and especially on a table with higher odds. Ideally your table should allow 10X odds+. If you truly believe you are betting on a dice controller or you yourself are a dice controller you could bet Come/DC on every roll after the come out. Take max odds on come bets then on your next come out roll when you shoot for the 7 take max odds on all your don't/come bets.
As for put bets you usually need to be putting minimum 6 times odds behind every put bet to make it stronger than the corresponding place bet. The best put bet I ever heard of was a new dealer allowing put bets on the Don't Come bets...I'd have made that bet all day if I had been there.