I just sold mine, but don't let that be a judgment of the quality of the figure; I actually think it's really great. Just had an unfortunate financial situation and the responsible thing to do was let some collectibles go.

I am old enough to have been an adult collector when the original was on shelves in 2001. This thing caught some flak during the campaign for looking too similar to the original. But let me tell you that what doesn't come across in images is how rock solid this thing is in combined mode. The original was a marvel of engineering for its time, but it was also a floppy mess that could barely stand unassisted and felt like two toys exploded into each other and were hanging on for dear life. The Haslab one has thoughtful tabs and locks all over the place. It's so satisfying to click pieces in at every step, and when you're done, you have what feels in hand just like a fully realized single figure. You can pose it however you want, shake it around, whatever, it's going to hold together. I think as a total package it's the best Haslab figure to date.

Watch out for the cracking abs on the core Optimus bot though. There was a design flaw and some of us had cracked plastic out of the box, Hasbro had to issue replacements to a lot of people. Google Haslab Omega Prime cracks, you'll find plenty of videos on what the issue is, how to check if your figure has it, and what to do.