I splurged one time and had a custom suit made from scratch by
http://www.tomjames.com.
One of their reps will come out to your house or office and do a presentation on all of their fabrics and patterns. You get to choose all the details of the suit construction like the styles of the collar, pleats, cuffs, seams, etc. They basically have every fabric on the planet to choose from as well, including all the "Super 100" fabrics found on italian suits.
Once you've decided on something you like, he will take detailed measurements of your shoulders, waist, inseam, etc. and then place the order with their factory. In about a month, he'll show up again with your new suit and let you try it on. It will probably fit perfectly but alterations will be made at that point if necessary.
The cool thing is that if you gain or lose weight at any point, they will stop by and take your stuff back to the factory and adjust it at no charge.
The best part though, is the fact that they embroider "Custom made for YOUR NAME" on the label inside the jacket. So when you sport your new suit and your buddy says "That's an awesome suit, what kind is it?", you can flip open your jacket and watch his mouth drop.
With all that said, I find that I look amazing no matter what suit I'm wearing
