They are considered budget tyres over here, but in the rest of europe they are a premium brand.
They are gaining alot of followers at the moment over here, so I'm not sure how long they will stay cheap for.
Although not an
Ibiza, I run them on my Honda Elise, and I cant fault them at all. Obviously they will never be as good in the dry as 888's etc, but as an all round tyre, I think they are very good.
My full set cost me ~£250 fitted from Event Tyres.
Edit: I use the XL Ku31's