My answer: I love all of them lol. But if I were to choose only 1, it will have to be Thyme. Not saying the other members is not interesting or have no development, but to me Thyme character compared to the other members has the greatest character development. If you've watched other versions as well, you will know that this character went through a lot. The person he is at the beginning and the person he is at the end are two different people. Plus, I like that he is very devoted to the female lead.

I'd choose Thyme too. Maybe it's because I feel I know him the best. He would come with a lot of baggage for sure (his mom, business empire) but after knowing how capable he is of growth and how devoted he is to the person he loves, he totally won me over. 

Can't decide btw Dao Ming Si, Ximen and Yi Jung. Kavin could've been on this list too but so far meh.

 Azet:

I love Kavin in all the versions, but i wouldn`t pick him for a boyfriend (in any of the versions). You never know whats in his head.

I mean you are picking Thyme, I like him to but he's far more toxic. Kavin every version is just a playboy and ppl can change that.

The farcade is a tea/pottery playboy on the inside like Thyme yes, he's more complex which i hope they'll touch upon soon, we are 11 eps in and no depth so far.  You are right but I'd still pick him over Thyme. It's preference I guess, I mean I did fall for Dao Ming Si too.

I choose MJ. He's a protector of friendship and love. He's loyal, good looking, fun, outgoing...I choose him. He seems to be the one with the least amount of issues. LOL