Samsung Galaxy Mini 2
Let's start with the most high-end and expensive out of the three models, the 3.2-inch Galaxy Mini 2. In this price segment the TN screen won't be the best, so viewing angles and colour rendering aren't stellar. But it's good enough for this type of phone. The resolution of 480x320 is higher than what you expect for an entry-level phone, this used to be the iPhone resolution up to #4 when the Retina screen was introduced.
The Mini 2 has a Qualcomm MSM7227A (S1) SoC, with a processor that consists of a single Cortex A5 core running at 800 MHz, and an Adreno 200 GPU. It's the same SoC used in the significantly more expensive Sony Xperia J, which is 200 MHz faster however.
The Mini 2 has 512 MB of RAM and a storage capacity of 4 GB, with 2.9 GB actually available for use. You can add a maximum of 32 GB with a microSD card in a slot on the side, so you don't have to take off the entire back cover. You charge the phone via the micro USB port on the bottom.
The buttons have the standard Samsung configuration, with a physical Home button below the screen with left and right capacitive buttons. On the right side of the phone the power button is located, and on the left the volume button. The headphone jack is on the top side. On the back a 3 MP camera without flash is located, pretty basic fare but what do you expect.
The Samsung Galaxy Mini 2 sits comfortably in your hand and it feels sturdy. It's available in two different colours, black/grey and yellow. Both covers are included in that colour, so you can change the look yourself. The user experience with the Mini 2 is good, as long as you don't mind exercising a little patience at times.