I bought my tail suit from ballroomsuits.com. Eric, who I believe is the owner, was very helpful, checking with me at least twice on my measurements after my local tailor messed them up. I added the wool upgrade for $100 or something like that. He also kept me up to date on the status of my order via email.
You might want to add an extra inch to your waist measurement as tailored suits don't allow much room for any weight gain. Don't ask how I know this.
There was a minor issue with the shirt collar because I take a size 17.5-18. He had to order one from DSI, I think. I ordered two from another vendor because we had a competition coming up and I didn't want to take a chance on having no collar. All of the collars got to me well ahead of time, so I had three for the comp. LOL.
I've used the suit for 3 comps now and I've been very happy with it. YMMV.