Go for comfort or you won't wear them! I usually size up in Choo wedges. For some reason they run smaller than my normal Choo size. If the 37 is too loose and slips around, I'd personally get the t-strap. I just like how much easier it is to wear a shoe with an ankle strap instead of a slide.
What do you mean by tight vs loose & comfortable?
If these are shoes you plan to wear often, some women recommend going with a slightly tight shoe. When they start to stretch out, they'll feel better. Later, when the shoes stretch even more, you can add inserts.
Since the pitch is so high, I personally, would not feel comfortable wearing a shoe that was loose. However, since you describe the loose shoe as comfortable, you can always add inserts. But, if you tend to stretch out your shoes from wearing, you might not be able to wear these for long, before they become too lose to wear comfortably.
If neither fit appeals to you, pass on the Patriot, and go with a different pair that fit better. If 36.5 is your TTS for designer shoes, I'd stick with 36.5. It is unusual to see a shoe listed without half sizes, but that does occassionally happen.
GL!
Thank you both. I will try the t-strap in size 36.5 and then decide from there.