I have a Model B Carbine made by IMI, imported by Action arms and a Mini set up as a pistol by Vector.
The Carbine is heavy for what it is, but I enjoy shooting it. It is more accurate than most people give it credit for and is extremely reliable.
The mini is a little bit lighter, and for a pistol of its type it is a lot of fun.
I had a 45 Carbine and an uzi pistol (aka Micro) at one time, too. the 45 Carbine was cool, but I only had 3 mags for it as not many were made and they were very pricey.
The pistol I bought in the late 80s because I thought it was cool, but it suffered in the accuracy department. I sold it for triple what I paid for it during the Great Panic of 93.
They're definitely an Iconic gun and if your tastes run to Action movies of the 70s-80s or its use by IDF, Secret Service, etc. its a cool piece to have in the collection. Although there are more practical guns that will do everything it does better.