Before you jump in and go running to a new host... you need to figure out where your primary target audience is. If I am not mistaken... Nimbus Hosting is based in the UK. You are going to get some delay in your site if their servers are based in the UK and your clients are in the US.
Best suggestion I can give you is to spend some time on WebHostingTalk reading reviews.
As for transfers.... you can get with @Adam Howard. He's gotten good feedback and does he have a deal for the client - http://xenforo.com/community/thread...ve-to-do-with-pizza-amazon-and-add-ons.63010/
I do some (usually at no charge) but I'm so snowed under with end of year computer related stuff for 3 of my clients that it's ridiculous. They wait till the EOFY to purchase their equipment and then it HAS to be installed and running before 12/31 ends.