I still like to try my beers "early" but I tend to leave them in bottles at least two weeks before even pulling a tester. My hubby has quit trying them before they are "ready" altogether, since he finds that they tend to taste a little fruitier or ciderish early on.
Conditioning them not only helps with the carbing, but also allows the flavours to have time to mellow and blend.
Give it time and it will get better... in the mean time start another batch if you haven't already, and pick up some commercial beer while you are wating for the homebrew to finish... it will give you a head start on the next bottles you will need!
Also - I have been making Cooper's kits pretty much exclusively (while I slowly get together the gear for grain brewing). I found the draught and real ale okay, and hubby likes the stout... but the international series seem to make better beers. Just a thought if you are planning on making this type of kit for the next little while!