Can we get some more context?
What's your budget?
You mentioned your office - what sort of profession/industry? You say you're a jeans and T-Shirt type - is that by choice or because you can't get alternatives that fit?
Do you know the rest of your dimensions - collar, arm and body length etc?
Where are you, Europe, US or Other?
The obvious alternatives, in the absence of more information, are to go made to measure / bespoke, look at the boy's sections in some of the...