I have been using Yu Yuphoria for more than 1.5 Years now and I can say I can recommend it despite few issues which I had. I bought this phone on its first Launch May 2015 and I am happy about this phone.
It has 2 GB RAM and yes it does stand upto the expectation in processing.
You can upgrade to Mashmallow via cyanogenmod rom.
The Camera Quality is superb.
No Heating issues, but yes every phone heats up a bit on heavy gaming. Continuous play of game may heat to reduce the gaming performance.
Batterys is normal, can last one day with normal usage.
Cons:
Screen does not lit up on first ring of phone.
Issues in 1.5 Years:
Had to change the screen of the phone after 1 year.
Had to change the battery of the phone after 1.5 years.
Despite the issues, I will recommend this phone as mentioned on the title.