I'm planning with my team to develop social network project, so it is time to choose web hosting company. My project will run on PHP/Mysql, using ajax.

Share your thoughts about what host must have at speed and uptime. On my own I found Host1Plus - maybe anyone knows about this hosting?
Please do not offer hostgator, bluehost, dreamhost - I and my friends already used them - they are very old, fully of clients and servers are slowly.