Although I have not owned the iPod touch 6th generation, but I have owned and used the 5th and 4th generations.
Now, lets talk about this particular model. It is the 6th iteration in the iPod Touch series. There are a lot of reasons you should not buy this paticular product.
Apple is selling this product for 21000 rupees. The specifications are an Apple A8 chipset. The iPhone 6 has the same chipset but it has a gigabyte of Ram where as the iTouch has 512MB ram.
The iPhone 6 is priced at 25000, and in 4000 more, you are getting a full fleged phone with all the features that the iPod can offer. Plus, the performance on the iPhone will be much much better and it will receive updates for a longer period of time.
There are so many things that you can do on a phone that you cannot on an iPod.