Never had a problem with my old prosound lights. Prosound lighting is actually made by american Dj hence why the same lights can be seen on their website. Other than a bad batch of ssc-2's I had once I have never really had a problem with maplin stuff.
I have had acme and prosound lighting and to be honest the ssc-2 blows an acme dynamo away. it is 16bit rather than an acme 8 bit. It had seperate colour wheel and gobo wheel. It has onboard dmx control over the acme and its optics are much better.
I own 4 dynamo's and 2 ssc2's and the ssc's are much better. And cost less.
Not to say acme isnt good stuff. But a generalisation like all maplins stuff is rubbish is itself rubbish.
If all they sold was that bad they would not still be trading.