I (hypothetically) own about 10 websites, each one with its domain,
with about 30 programmers that works on different parts of them.
I need to choose a reliable hosting provider that allow me to easily
manage all of them in a single account/control panel.

Id est I want to know the biggest hosting providers that provides a
single account/hosting plan with these requisites:
- multiple domains (pointed to different directories under the root of
my main FTP account)
- multiple FTP accounts (for my programmers, with access limitable to
specified directories or subdirectories)
- under $50/month. VPSs (like www.anywherevps.com or
www.websitesource.com...) usually costs more and are focused to
hosting reselling, that have separate control panels for each domain,
therefore are usually not good for me
- bigger, in Google PageRank and Alexa Traffic Rank, than
WWW.HOSTGATOR.COM or WWW.WEBHOST4LIFE.COM, that are the biggest I was
able to found till now. See details here:

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WWW.HOSTGATOR.COM (Unix)
 Google PageRank: 8/10 (higher is better)
 Alexa Traffic Rank: 1376 (lower is better)
 Alexa Online Since: 22-oct-2002

 Multiple domains: unlimited
 Multiple FTP Accounts: unlimited
 Price: $9.95/month
 Live chat support: yes
 source: http://www.hostgator.com/shared.shtml

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WWW.WEBHOST4LIFE.COM (Windows)
 Google PageRank: 6/10 (higher is better)
 Alexa Traffic Rank: 6030 (lower is better)
 Alexa Online Since: 3-oct-2001

 Multiple domains: unlimited
 Multiple FTP Accounts: 300
 Price: $19.95/month
 Live chat support: yes (sales only)
 Source: http://www.webhost4life.com/hosting.asp

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Can you find bigger ones that respects all my requisites?