I have to say that I like these people - and have now opened a second reseller acount with them.
The attraction is firstly that the customer care is pretty good - even though you might expect new hosting companies to be very friendly with customers anyway, it's the little things - such as having scripts that e-mail you when your nameservers have resolved, and if there's a problem with them, for example.
Also - their packages are very feature packed, which has been especially attractive - running Fanastico and a various skins, this is something I specifically wanted to be able to offer some of my business customers, as well as for my own use.
I used to think Sonnet were reseller for 123reseller, but they actually just buy servers from the parent company.
Overall, I have to say, I do like
www.sonnethosting.co.uk/ 