Rather than tell you which flavour is ‘best’ — that's genuinely personal — here's an honest side-by-side of what to actually expect from each, so you can pick based on your own preferences rather than guesswork.
Chocolate

Built around real cocoa depth (covered in Week 2's chocolate post), Chocolate leans richer and slightly more intense than the other two — the pick for anyone who wants a dessert-like, indulgent-feeling shake, especially post-workout.
Vanilla

The most versatile of the three (covered earlier this week), Vanilla is rounder and less intense, working well both as a straightforward daily shake and as a recipe base for baking, oats or pancakes.
Salted Caramel

The most distinctive flavour profile, balancing sweetness against a genuine salt note (covered Monday) — the pick for anyone who finds straightforward vanilla or chocolate a little plain and wants more flavour complexity in their daily shake.
Texture across all three
All three sit on the identical pea, rice and faba bean base, so texture differences between them come down to flavouring formulation rather than the underlying protein — if chalkiness (covered Monday) was your concern, it's a base-formulation question, not a flavour-specific one.
How to actually decide

• Want something indulgent and rich — Chocolate.
• Want maximum recipe flexibility — Vanilla.
• Want the most distinctive, complex flavour — Salted Caramel.
• Genuinely can't decide — that's exactly what the Sample Pack solves.
This article is general nutrition information, not medical advice. Protein, sugar and label figures reflect GC Proteins' published nutrition panel; always check the pack in front of you, since formulations can be updated. Speak with a doctor or accredited dietitian about your individual protein needs.