I hav been with Namesco for some years now and they host 5 business sites for me. One site has a fair amount of traffic.
Their support is OK but I have suffered a bundle of frustrations with them. The shared platforms had significant restrictions of file sizes and POST variables etc.
On one nightmare occasion they shut down one of my sites, without notice, and forced me to a VPS service. I have since had to move the platform again and the latest incarnation is slow, sometimes horribly slow.
I need to face up to a dedicated server but it will not be with Namesco.