The Toyota Glanza is a rebadged Maruti Suzuki Baleno, and the only difference between the two is the badge, some interior trim colours and the warranty. The Glanza is sold with a 3-year/1,00,000km warranty, while the Baleno gets a 2-year/40,000km warranty.
The Glanza is a good option if you like the way it looks, and the UV cut glass is a must-have feature for you. However, if you are looking for a car that will hold its value better, then the Maruti Suzuki Baleno is the better option, and also features UV cut class.
The Tata Altroz does get you the option of a diesel engine, and a DCT automatic, which is the more sophisticated auto gearbox here. However, you could also consider the new Hyundai i20, which comes with a CVT auto or a DCT with its powerful turbo engine.

