I prefer this rather than the normal ones as it has more designs to choose, light & small. The salegal did a straighening demo using my hair with the normal one. I was impressed by how shiny, smooth & straight my hair was. It has few models too. The prices are from $50 and above.
I didnt try out the mini one at the shop. I tried it at home. It gets warm up very fast. I need to repeat a few times on a same straps of hair. The normal one requires 1x. Mini one has only 1 heat temperature when i turn it on. The normal has a few heatings temperatures to choose from.
After straightening my hair, i showed to my sister. She said my hair was quite straight. Worth to buy the mini one :).