The Yamaha FZS V3 is a great choice for those who are looking for a powerful motorcycle that offers a sporty look and feel. It has a powerful engine that delivers great performance, and is capable of reaching top speed of upto 155 km/h. It has excellent handling and is great for tackling twisty roads and tight corners. The bike also comes with a great range of features and accessories, making it a great all-rounder. The MT 15, on the other hand, is a more affordable option but also offers great performance. It has a more powerful engine than the FZS V3, and is capable of reaching a top speed of 165 km/h. It has great handling and is great for taking on tight corners. However, it does not come with as many features and accessories as the FZS V3. Ultimately, it all comes down to personal preference and budget.