To be honest dude I dont worry about the power or accuracy (I have my HW45 for that), the cybergun guns are excellent but wildly inaccurate but you just want to keep on shooting them.
I have the Sig and the Uzi, the Sig is fantastic to blast out 25 rounds then have the slide lock back and the Uzi is a real beast, the kick is very realistic.
Regardless of power or accuracy these guns are well worth the hundred quid or so just for the sheer awesomeness.