[quote name='stingrayPete1977' timestamp='1510060451' post='3403605']
I haven't the room to store or the desire to cart around all the heavy old fashioned kit never mind a spare desk and power amp no matter how cheap they are.
[/quote]
+ 1. Age and decrepitude would prevent me from doing so, even if I wanted to.
In response to the original poster, I do think £500-£600 could be pushing it a bit for a complete PA that is any good, unless you get very lucky buying used. Itsmedunc's suggestion of used JBLs is worth following up (the old EON15, if you can find a set that haven't been abused, are decent). If it was me, I'd go for used active cabs (most have class D amplification built in and are reliable and not overly heavy) and an analogue desk with some kind of on-board reverb/FX (I picked up my spare, an Allen & Heath PA12 in mint condition, for less than £200). That's the main components sorted, but you do need to factor in mics, stand, cables, etc, etc and they add up.