I am very thin too. Viola got nice one with good fitting, but the style is a bit more 'lady', not sure whether you like them.
The quality of the fabric is very good.
Although it's a bit more expensive, but can last for longer time. For example, I bought some suit 3-4 years ago with simple style, I can still wear them, and doesn't look 'old'.
They can do alternation for small size people too.