Cheers for the replies. I already have a Kenwood 4 channel amp, which is rated at about 50w rms for each channnel, and 2 pretty old HU's to choose from, a Kenwood 7080R or Sony M500R. Not sure which to use yet. Music wise, I would be playing mainly dance music and like a tight punchy bass sound, rather than rumbling bass. Ideally I would listen to some speakers in the shops, but obviously some best ones arent always available!