Thanks to Comixology and a few other sources I have read through the entire IDW timeline up to and including Last Stand of the Wreckers.

This has changed transformers forever for me. Prior to starting the IDW comics (about 2 months ago) my TF media was entirely G1, Beast wars, Prime & some Animated. Now I have a whole new perspective on characters I thought I knew about and see that there's so much more to the G1 universe than the G1 'toon.

That may sound pretty lame... this wasn't a religious awakening or anything :P, but, yeah, I used to think I knew what i liked but turns out I'd only been dipping my toes in.

Here's where I may expose myself as a bit of a philistine... I really liked All Hail Megatron. It had it's issues, like the ridiculous size discrepancies with some of the 'bots, but overall I felt that it had a great story and was jam packed with action.
Last Stand of the Wreckers was great also, I hope it's kept up in the ongoing series.