The Vita's design is alot better than PSP i though, except for the small grips next to the touchpad.
Given what is inside Vita, it's amazing how it ain't bigger.
Yeah the buttons may be smaller on Vita, but i personally like the clicky buttons on Vita.
And also i had no problems with button placement on either system. The battery life is more the problem with both system.
All i know since i bought a Vita, my PSP slim seems so small and light to me.
Xbox One, PS4 and Switch (+ Many Retro Consoles)
'When the people are being beaten with a stick, they are not much happier if it is called the people's stick'- Mikhail Bakunin
Prediction: Switch will sell better than Wii U Lifetime Sales by Jan 1st 2018