I have been using the Cricut machines for over three years... I started with the small original Cricut - Upgraded to the Expression --- purchased the Gypsy over a year ago. I have over 50 carts. I do not have the E2.
I finally purchased the Imagine about 2 months ago --- it is much more complicated to use - and not near as user friendly. I've been fighting that machine ever since I bought it!!
If you are not familiar with the basics of the original Cricut Machine, I would not recommend a newbie picking up the Imagine as their first machine.
The biggest difference between the Imagine and the other machines is the Imagine prints. But - the other machines are more "simple" and much easier to use. Even though i have the Imagine now -- i only use it when I'm using it conjunction with the Cricut Craft Room on the computer (for layering complicated projects) or if i want to print something from an Imagine Cartridge. Otherwise, I go back to the Expressions for all other projects/cuts.
If I were you, i would see if you could explore/borrow/buy used a different Cricut Machine (even if it's the original "baby bug") before trying to take on the Imagine.
Have fun!!