The Edifier 1600's were very good for the money. Good mids and high, round sound, just a little short on low frequencies but otherwise amazing for the £50 they use to sell for.
I actually run two passive 1600's (from two sets of 1600's) then connect them to a the Sub/Amp of an Edifier S530. What this does is give the sound of Edifier 1600's however it adds the lower frequencies that are missing from standard 1600's. If Edifier ever made this setup it would sell so much. To picture what I have google Edifier S530 then replace with standard S530 satellite speakers with two E1600's!
Dan103, those ones you have listed I don't expect will be very good. Mids will be washed out like most 2.1 setups. If you look at specs the power on those is really low also. Try them but I expect you will be returning those speakers.
EDIT. Just had a look at prices of Edifier speakers, I know the pound is low but everything is far more expensive then everything was a few years ago.