On the complete opposite side of the spectrum are Sideswipe and Silverstreak. The Sideswipe/Sunstreaker mold's alt-mode is arguably the best in the Classics/Classics 2.0/Classiverse line. At least of the deluxes. While I really do like Prowl and on paper his alt-mode might sound more exciting, Silverstreak "pops" just a bit more when I compare them together. You can't go wrong with either, though. (But I am considering getting a set Reprolabels stickers for Prowl to up his curb appeal.) Sideswipe is perfect in every way.
Going to robot mode, Ironhide moves from a GBSPOF to just a disappointment. The head's range of motion is limited to side-to-side and because of the toy's design, will always be looking down. As in "at his belly-button." His face was also painted the same light blue color as the windows. (I fixed this with some Testor's aluminum paint.) His transformation is much more akin to the movie toy designs than other Universe figures. I appreciate the effort, but the execution is just lacking. The only complaint I have about Silverstreak is that his face was painted white, but that didn't bother me enough to fix it (yet.) Sideswipe, again, is perfect.
I've got all the Universe "Classics Series" deluxes except Tankor, and Sideswipe is far and away the best. You can't miss with Prowl, either. If you're a complete G1 phagg like me you'll want to pick up Ironhide, but if you're on the fence I don't mind telling you that you'll be okay skipping him.
P.S. Ironhide DOES have one neat little feature. His rear window actually becomes his chest. During transformation, you fold his rear bumper up and doing this slides a panel in to place behind the rear window. This is the little silver piece with his faction symbol you can see in the picture. That is a nice touch.