I'm with you on this. No real complaints.
I've been with them since they were Screaming.net then World Online and, finally, Tiscali.
That's about 4 or 5 years on dial-up and 10 months on 512k BB. I upgraded to 1mb BB yesterday and am waiting for the new speed to kick in - hopefully sometime today.
Tiscali are a huge ISP across Europe and, yes, they do get a lot of flack. But, I think that's because they have a damn sight more customers than many other ISPs.
And, probably, some people are not happy unless they're wingeing. ;-)