The hcs2330 = the c2 plus if I'm not wrong.
I just got back from Jayacom HQ at Plaza Imbi and I tested most of the speakers you mentioned in the list as I was looking for one myself in that price range.
Initially I was leaning towards the Gigaworks T20 from Creative so I tested it first, but to my disappointment it seemed underpowered. Sound quality was superb but unfortunately at only 28 watts its severely underpowered. Even at max volume it was still too soft for me.
Don't bother with the Edifier hcs2330 or the c3. Very very very disappointing bass. If you are the sort of person with a slight appetite for some bass then the Edifiers are definitely not for you.
The VS4121 is great as I've been using it for 6 years and I can definitely vouch for it.
I ended up buying a VS4621, Octane 7 in the end. Sounded the most decent among the lot I've tried. Well at least to me.
If you got the money to burn I'd suggest the Aego M or the Creative T3. But if your budget restricts you to perhaps the models you just mentioned I'd pick the 4121 or a 4621.
Go try them for yourself if you want to be sure though. Not everyone has the same taste when it comes to sound.
thanks for the reply...hehe thought i wont be getting a reply in here. but i try reading some reviews people say the mid speaker sound is going on the surface so the sound is a bit muddy for the mid range speakers? do u feel anything?
have u try the edifier P3080M too? i will go & test it maybe soon....so i think my main target will be the vs4621....but will see other models too...