With the Oppo R7s, which was released late last year, the Chinese manufacturer has created a premium-looking phone with a metal unibody and a contoured 2.5D screen at a relatively low price.
At 5.5 inches, it sits nicely in the middle of last generation's 5-inch R7 and 6-inch R7 Plus.
The R7s has managed to squeeze a lot of performance out of its Qualcomm Snapdragon 615 chip, and has consistently performed well in standard benchmark tests against other phones using the same chip.
It has 4GB of RAM, compared with the 3GB of most other phones in this line-up, so switching between apps will be very quick.
However, the R7s does not have a fingerprint sensor, which is starting to become a basic feature on many smartphones these days.