Just so you know, this is the breakdown of cup sizes for Starbucks:
Tall:254ml
Grande: 473ml
Venti: 591ml
So theoretically you could have one venti a day for 2 HEX A choices (syn free) OR a tall and a grande throughout the day which just puts you slightly over your HEX allowance.
Or of course have your 1 venti a day as a HEX and count the leftover 240ml of milk as syns.
PS - I'm pretty sure my consultant said a venti skinny capp was 10 syns?