raid 0 with UV300 120gb. Take 2 more same or elseones?

Lena__

Honorable
Jan 27, 2016
100
0
10,680
Greetings!
My dream(out of budget now) setup consists of several smallerSSDs in raid, better GPU than I probably need and CPU on which I'll try my hands at OC.
Currently have a SUV300S37A/120G and a budget slightly above 1000$(+120-150)

Question is should I want several same models or ones with alike characteristics?

What are gaming worth characteristics anyway?

Hardly do anything apart from weekend's 12+hrs of gaming
Not interested in Win fast boot.
Care for fast loadscreens in MMO games(sev secs) and modded singles.(no more than 2-3mins)
Noise and possibility of info loss do not bother me.
p.s. how come price of 60gb and 120gb differ so little?
BG