HAND VALUATION
SSS by Danny Kleinman

SAYC. Uses 4-3-2-1 point count. Says nothing about other aspects of hand evaluation.

SSS. The usual 4-3-2-1 point count applies primarily to notrump bidding and requires much adjustment and continual reappraisals for suit bidding.
For suit bidding, you will want to evaluate both playing strength and defensive strength. Even for notrump bidding, the 4-3-2-1 count requires adjustment up or down:
PLUSSES: ace-richness (aces are really worth about 4.3 points, not 4, while queens and jacks are worth slightly less than "2" and "1" so that the deck still contains about 40 points total); 10s and 9s; bunched honors (e.g. QJx, KJ10x); honors in long suits.
MINUSES: ace-poverty; poor spot-cards; stray queens and jacks (no other honors accompany them in the suit); bare honors (singleton ace as well as singleton king, doubleton ace-king as well as king-jack, even ace-king-queen tripleton); 4333 shape (bad for notrump play, worse for suits).
FIT (length in partner's suit) and MESH (strength in partner's suit) are plusses.
MISFIT (shortness in partner's suit) and MISMESH (picture-cards facing partner's shortness) are minuses.