Please select your call in the poll. welcome any opinion for your call. IMP
The below is from SAYC for your reference.
OPENER'S REBIDS:
With a minimum hand opener may:
Rebid NT at the cheapest level
Raise responder's suit at the cheapest level. four-card support for a major suit is desirable, but not mandatory.
Show a second suit, four cards or longer, lower ranking than the first.
Rebid the original suit at the cheapest level possible. This is rarely done with less than 6 cards in the suit.
With a medium opener (good 16 to 18 points), opener may:
Jump raise partner's suit or jump rebid his own suit.
Reverse in a new, higher-ranking suit (if the first suit is longer than the second)
Show a new suit without reversing (note the wide range of 13-18 points for this action).
With a maximum opener (19-21 points), opener will:
Jump rebid in NT - - usually 18-19 points.
Double-jump raise partner's suit.
Double jump rebid his own suit.
Jump shift into a second suit four cards or longer.

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