Who's the best host for blogs?

Hi all
Firstly I'm a real novice but I eventually got a blog started after some months with it's first post on ThirdSphere which has it's own Autoresponder (Automation Station) and had a fair bit of trouble intergating a different pop up/opt-in form with and just felt it was quite cumbersome so I decided to move hosts to GoDaddy (already had an account with) and use Aweber/Getresponce as the autoreponder.

Bad decision! I've had nothing but trouble.

I'm stuck at the moment with the database error:
"Warning: Cannot modify header information - headers already sent by (output started at /home/content/g/r/a/xxxx/html/improvegolfswingworld/wp-config.php:1) in /home/content/g/r/a/xxxx/html/improvegolfswingworld/wp-includes/functions.php on line 2808
Error establishing a database connection."

I have established that it maybe a 'white line'? or space somewhere in the wp-config.php. I have deleted the file and upload another which I have gone through with a fine tooth comb looking for any spaces, I have tried using a different text editor but to no avail.
I have also spoken to a techie via email and he pretty much said he would not touch it because GoDaddy is hosting it.
So my question is, how often can I change hosts and who is the better of them all?

Regards
CJT