I have one, it does the job, but it is not easy for me to use. It is much more difficult to get things in focus and in frame than it is with a larger traditional microscope. That being said the microflip takes up a ton less space. If I had a fish room with a bench to keep a full size scope on I would upgrade. Also consider how often you're actually gonna use it... If you're just gonna look at these dinos and move on I doubt it would be worth getting a larger scope. I rarely use mine but I actually whipped out the microflip last night to see what kind of microscopic life might be coming off the live rock I just added to my tank. The whole time I was using it I was thinking about what a pain it was compared to a real microscope. But overall I personally cant justify the cost/space of a larger scope.
I also bought mine to try to identify what kind of dinos I had. Turns out the answer was diatoms and I just needed patience and water changes.
Sorry for the wishy-washy answer but In summary... when I'm using it I wish I had a real microscope and when I'm not using it I'm glad a full size microscope isnt taking up space and collecting dust.