Vidal Sassoon Hot Rollers

I had a little bit of time to spare and so before I hopped onto the computer, I quickly rolled up sections of my hair (dry, not damp) in the hot rollers by Vidal Sassoon and surfed the internet until the rollers cooled down.
I'm not sure what model it is or price because a friend had given it to my mom and since its old, there is no box anymore. Sorry about that.
This is what it looks like though:

I got all excited because I barely found out how to work the bobby bins with the rollers, haha!

As for the results:

I liked how it turned out. :3 I liked how it didn't take very long too (about 20 minutes). It usually takes me about an hour to curl my whole head with the curling tongs.
I curled it at night and the curls didn't last until the morning though because my hair was all straight again when I got up. Maybe it was because my room was a bit humid? Also, I didn't use hairspray though so it would have probably stayed curly if I had used some. :p

PROS:
-Easy to use
-Fast/Quick
-Can do other things while curlers are on
-Rollers have different sizes

CONS:
-Rollers can be hot when you try to handle them
-Hair tends to have more flyaway using these rollers compared to using curling tongs
-You look ridiculous while the rollers are still in your hair (can be a good thing if you like to make people laugh :P)

Have you used something like this before? Do you like it?