ASP/Windows hosting?

I'm writing this on behalf of my boyfriend.

He has a hosting account with 1and1.co.uk using Windows Hosting as he is a .net developer/programmer. He's having all sorts of problems with 1and1.co.uk and wants to change hosting company.

He's having trouble finding one decent enough and affordable for what he needs.

Can anyone recommend a decent hosting company for .net/asp/windows etc.?

Thanks x

xposted