It has the same chipset/cpu/gpu/memory as a Samsung Galaxy Core Prime, but with a bigger screen, better quality screen, (just), better main camera, and full hd potential.
After too much investigation, (I am retired) I bought a Core Prime for SWMBO. Chose the core prime size due to overall size/weight. SP 6 is a bit too heavy for me.
The Core Prime seems fine to me. Good value when a "step up" is probably the S5 mini, which is still over £200. (c220 from the jungle, and 299 and CW)
All the specs easy to find on gsmarena.
Did not try the Voda SP 6 as SWMBO has a cheapo sim deal from BT.
You'll probably enjoy it.