Color Plus has the best menswear by far. Their shirts are excellent and they come out with innovative washes off and now. The trousers are good too - good fabrics, good fit, good styling.
I have bought a lots of Colorplus stuff and they have really lasted. Once, when I had a problem with the colour running in a shirt, the garment was replaced without any questions.
Their sales personnel are very helpful and accommodating too -- unlike in the Allen Solly showrooms (especially the one in Brigade Road, Bangalore) where the salesmen, including their manager/owner do not know a thing.