Hands down I say go with the Argyle and 5-Vest. Could go 3-vest for more formal if you like.

I have tried playing with a PC just for kicks before a wedding, where I was not the piper but had my pipes handy. I am against the practice. Since the Jacket is short and cut dramatically, I found it didn't look so good on me. It didn't get to hang sharp like it tends to do when you are just wearing it and not playing and marching/walking etc. With an argyle or in my case a "Wallace/Gillie's" jacket the longer length and more subtle curve lend itself to playing in public, IMHO.

That being said I did play for many years in the only Jacket I owned which was a US Navy Mess Jacket (cadet I think). It was short and cut, but I must say I never liked it.

Argyl is my recommendation.

peace,
justin