Do you have any good or bad experience with 1 And 1 web hosting service?

i’m thinking on changing my hosting provider because the one I have really sucks; the web pages I have there often fail (data base service) and I’d like to be on a reliable one.
Is Godaddy a good hosting ? What about the speed they have ? Does anyone have a bad experience with them ? Is there any other hosting service you could recommend me ?
I’d really appreciate your answers and help.
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I have two hosting needs: PHP and Rails. I’ve had (a bad) experience hosting a PHP site on a shared server. I’ve also briefly run a simple PHP server for a hobby site with low-availability standards.

Now that I’m considering running a serious, large site (Ruby on Rails), in addition to a few small existing PHP sites, should I host myself, or choose a Virtual Private Server?

* I have a 3.0GHz P4 / 1GB ram machine I could dedicate to hosting.
* I am familiar with general computer security principles, programming, and Linux
* I have a Comcast cable connection (no static IP)
* I can’t imagine spending much more than / mo. to start.
I’ll add any details you consider relevant.

I’m thinking on changing my hosting provider because the one I have really sucks; the web pages I have there often fail (data base service) and I’d like to be on a reliable one.
Is Godaddy a good hosting ? What about the speed they have ? Does anyone have a bad experience with them ? Is there any other hosting service you could recommend me ?
I’d really appreciate your answers and help.