Looking for a host that can grow with my site
 

I'm launching a WordPress site next month that I believe will grow faster than expected. I'm not sure what's the best choice for hosting.

So I looked at managed WP hosting, thinking a 'cloud' option may let the site grow to 500 members or so & weather traffic spikes - and then I can move it to something more permanent. So I'm really not sure which way to go - and perhaps it's because I don't understand hosting that well. A distributed grid sounds cool, but does it work in practice? Is eventually getting a dedicated server unavoidable? What the hell do sites that have a lot of members and traffic do?


What can you say about cloudarion.com dedicated servers for rent hosting?


All advice will be appreciated - I'm planning on launching my site, I need to get this squared away ASAP. Thanks!