Hi, Looking at buying my first amplifier, for which I have allowed myself to spend up to £400. I have had the chance to demo the marantz pm6004 and before purchasing would like to know if better can be had by buying second hand. I have been looking around and like the look of the arcam alpha series, and these can be purchased at less than the cost of the marantz, the one I had in mind was the alpha 10. Would this be a better performer? I would initially be pairing this amp with dali zensor 1's but only short term as I have my eye on a pair of floorstanders. (rx6's) Would be grateful if someone could give their opinion on this, and also give suggestions for other amplifiers that i should be looking at/demo'ing with this budget (although this is more difficult second hand).