Been with them for two years now for domain registration and email. So far very reliable and speedy response to support questions. One of the cheapest and you get free mailboxes with every domain - just what I needed.
Only minus point is that their free web forwarding does not offer the masked / framed version where your domain name stays in the address bar. You always see the url of where the pages are actually hosted - 123 offer both options. Still Pixel do offer one of the cheapest web hosting packages where this problem would not apply of course.