"Really good" is far too subjective for this forum, so here are all the 3P Shockwaves: Quakewave: https://www.google.com/#q=Fanstoys+quakewave Quakeblast: https://www.google.com/#q=cloud+9+quakeblast Mugan Amputare: https://www.google.com/#q=kfc+toys+mugan+amputare Cyclops: https://www.google.com/#q=mastermind+creations+cyclops Quake: https://www.google.com/#q=fansproject+quake Military Operations Commander: https://www.google.com/#q=wst+military+operations+commander Purple: https://www.google.com/#q=custom+robots+purple X-Ray: https://www.google.com/#q=Warbotron+X-Ray Did I miss any? Additionally, this will probably be moved to the 3P section, but you'd have better luck there anyway. EDIT: Here's my breakdown: Quakewave - MP sized. Bought it when it first came out, don't regret it. Though the cable broke almost immediately. Later (more recent) runs have better cables that don't snap like the first run. Quakeblast - MP sized. Could not have been released at a worse time (in between Quakewave and Laserwave), essentially a less expensive retool of Quakewave. I had absolutely no need to get it since I own Quakewave, and I think it looks worse, so to each their own. Mugan Amputare - Deluxe sized. Yet another retool of the "Mugan" figures, but I think it looks pretty good. Though the laser hand seems fragile to me due to it being so small and skinny. I try not to transform it too often. Cyclops - freaking huge. Such a pain to transform, though it is a beautiful figure. I had it for awhile and then sold it off to make room/money for figures that were easier to transform and didn't feel like it was going to break anytime I touched it. Did end up getting the mini sub that came with it, which I highly recommend. Quake - Legends sized, if not a tad smaller. I REALLY like this little guy. Military Operations Commander - WST sized. A shrunken version of the G1 figure. I don't care enough about the G1 figure to spend the insane amounts that sellers are asking for, so this guy counts as my G1 Shockwave. Purple - Deluxe sized. I don't buy non-transforming Transformers, but I do like the way this guy looks. Highly articulated, being modeled after the Revoltech figure line. X-Ray - scout sized. This one comes as a model kit, and has been known to have breakage issues due to tight joints/etc. Both of mine have been fine (but I bought that second one just in case). And because I'm a teacher... *advice
or if you want to go legit theres always energon shockwave prime shockwave MP shockwave or the g1 shockwave or FOC shockwave or the little one that just come out
I assume the OP is aware of official releases and is either A) not pleased by them or B) owns the ones they want and is hoping to bulk up their Shockwave collection with 3P offerings. In case they are not aware of official releases, there are: G1 Shockwave Action Master Shockwave Energon Shockblast Alternators Shockblast Animated Shockwave Robot Heroes Shockwave DOTM Shockwave (voyager) DOTM Shockwave (Cyberverse) Kre-O minifig Shockwave FOC Shockwave Bot Shots Shockwave Prime Beast Hunters Shockwave (voyager) Prime Beast Hunters Shockwave (Cyberverse) Construct-Bots Shockwave Combiner Wars Shockwave Q-Transformers Laserwave Whirl painted purple (ugh...how you'd rather have that than any 3P offering, I don't know, but it's "official", so..) MP Laserwave (plus all the repaints and differences between Hasbro/Takara releases, etc) Or, you know, here: Shockwave (G1)/toys - Transformers Wiki
It's 'advice', and would be better asked in the third-party section. http://www.tfw2005.com/boards/transformers-3rd-party-discussion/