We had outgrown the smaller Step 2 coaster, and decided Santa would bring the bigger Extreme coaster for my 4 and 6 year old.  They absolutely love riding it!  Definitely gets some speed going down, and I like how easy it is for them to push it back up and launch themselves down.  I can’t wait to get it out of the basement and take it outside once it warms up.  I bought this product based on all of the rave reviews and you can add my review to the list now :)