Ironically I paid 1985JPY ($21: $25 w/ postage) for my TFGo! Smokescreen. I agree that it has a better colour scheme, and the additional armour has no appeal to me, so I don't miss it.

I also found getting the arms and roof panels into place to quite fiddly. Overall this toy is pretty ordinary. Is it better than the Knock Out redeco? Sure, in terms of being an original mould that better reflects Smokescreen's on-screen character design. But in terms of engineering and design, I think it's about on par. In fact, one could argue that the Knock Out design is better because it doesn't "cheat" by using faux bonnet chest kibble in robot mode (the vehicle's bonnet becomes the chest).

But yes, this mould is undeniably better than the Knock Out mould because this IS Smokescreen. The Knock Out mould never really suited this character. Plus, no stickers and no Arms Micron! It's not a bad toy, but I don't think it's great either. More recommended if you're a fan of the character, otherwise I'd recommend checking out someone else's figure for yourself IRL (or reading/watching more reviews) before deciding if this toy is for you.

I've taken pics comparing AM Smokscreen (L) w/ Go! Smokescreen (R):