The Sonar certainly isn't the most comfortable headset we've ever tested. The main problem is the sheer weight which could be painful for some people, long term. As long as you adjust the headband correctly, though, they are fine for an hour or so.
Cyber Snipa have chosen to use cloth padded earpads which surround your ears and press against your head. These make this headset a little more comfortable to wear than the Arctic Sound P531 which has earpads that press on your ears.
The headband also has a cloth pad on the inside which helps to improve comfort. It also features hinges at the ends which lets you fold up the earpads so that the traveling size is smaller and so the headset is less likely to get damaged if you put it in a bag (or in it's carry case).
For a £40 headset we were pleasantly surprised by the sound quality. When playing music the headphones performed very well, producing a very clear sound. They do have a slight bias to the lower registers though which suits bass heavy music more than other genres.
When watching movies, the headset's surround sound really enhances the experience and brings an extra level of immersion. When gaming the sound panning is very effective, letting you hear where every shot is coming from. The sound balance also seems to have been set up for gaming which further enhances the experience.
I dont like the appearance either, looks like a good match for those RATT mice.
PC WORLD here sells a lot of their hardware, some is alright, some looks a bit crap to me.