Jazwares' first classic styled offering is this 5 inch size Sonic. Since he's larger, he doesn't come with anything, and is well sculpted, and matching with the old look. His box is appropriately labeled 1991, which was the very start of Sonic. Note the Generations CG classic Sonic used for the box art. It's a nice box, that displays the figure well for MIB collectors. The flashy foil 20th stamp doesn't cover anything, and the box isn't super huge compared to the size of the figure. (Though it is pretty big)
He can be found at Target & Toys R Us for about $9.99. May also be found at Gamestop
5 inch Classic Sonic is a great looking figure, & a good amount of thought seems to be put into making it, too. The head is hollow (unlike their other figures) which is fantastic because it makes him less likely to tip over/top heavy. Also, if you look carefully at the joints, they're covered this time.

Unlike all their other figures you don't have the pegs/bolt ends showing, and the limbs don't look 'knobby' from where the joints are bigger, giving him a smoother appearance. The expression is great, you can see him similing there in the 1st pic, just as it should be. VERY classic expression, perfect placement for the eyes. Classic fan or not, you'll want to grab this figure if you like Sonic figures at all!

Photos by: SonicDM, SonicBoom403 & SonicToastPhotos by: SonicDM, SonicBoom403 & SonicToast

The arm articulation is good, he can hold poses because his head doesn't weigh a ton, and he doesn't feel flimsy in any way. However, he has NO KNEES (likely due to shorter legs) so his pose/stances are a little more limited. The waist-swivel sort of breaks up the line for him if you get one with a paint flaw. He doesn't seem prone to paint flaws, but if he has one, this is where it will be. His id number (for some reason) is on the SIDE of his shoe (visible above) rather than under it, for some reason. Due to his proportions, he's not as tall as the usual 5 inch Sonic (comparison above) but it doesn't seem to be an issue.
Nitpick: Only 1...hands in fists only. Pointing finger or 'thumbs up' could have given classic poses.
Known issues:
Paint flaw on waist swivel, waist swivel 'stuck' or super hard to turn

This is the classic style Super Sonic from the classic/modern SS 2-pack figures. He's on the 5 inch scale, and as you can see, looks good. He seems to have the exact same body as the regular figure, but the upward spikes make the head just a little bit bigger. It's nice how they re-shaped the eyes to change the expression (note frowny mouth too) The upward spikes have been well sculpted, it looks very accurate and appropriate. He has the same hollow head, so he should not be that top-heavy. However, because he's exactly like the regular version, he's going to have the same issues like frozen waist joint, no knee, fists only, and possible paint flaws on the belly dot color. The moder SS is on the JW Modern 20th Anniversary page. This figure is def. the better of the two from the pack. He is not only better sculpted, but you should find less flaws with this figure.
The Super Sonic 2-Pack should be about $19.99 at Toys R Us. Sonic 2 pack should remain available through 2013. 

TODO: Split to super sonic pack article? Only half belongs here (for comparison)

Photo by PacmanSonic138

For some reason, in fall/winter 2012, they have decided to totally re-design the package for classic 5 inch size Sonic. The box loses the black/gray checkers with green background, & becomes much brighter with white & portrait background, bright yellow, fun stars & bold "10 pts articulation" sign. The new box is a big change, but the figure remains the same. They also added a sticker over the "20th Anniversary" on their classic line figures, as seen here.