Cramer's Stock Picks: Booking Over Sabre, Topgolf Not Best Bet, Blackberry Sinking, Wait on Under Armour, Vertex Excellent

Topgolf is profitable but Cramer believes booking holdings is a better stock pick in the space.

Cramer advises avoiding Sabre and instead investing in Booking Holdings.

Cramer sees no future for Blackberry and believes it's a sinking ship.

Cramer wants to see more good quarters from Under Armour before recommending.

Vertex is an excellent company in Cramer's view.