You could do far better for your £300, I reckon. Have a look around for ex-dem Monitor Audio RX1's or perhaps even the GR10's which go for similar money and offer stellar performance. There are also B&W CDM1's, DM 602/3, Mission 753, Monitor Audio RS6, KEF Q300, PM DB1i... All of those can be had for under £400, I think they are all worthy of fending the IQ50's off.
If you were spending about the same on an amp, check out the Arcam A85 and Musical Fidelity A3, those are about the best two integrateds you can get for under £300. Go for the Arcam for warmth, the Musical Fidelity for a more 'solid' sound. Either would run the