I saw at :
http://www.serverbeach.com/catalog/default.php

Serverbeach offers Raq4i special :

Dolphin RaQ 4i
Monthly Transfer: 400 GB
Memory: 128 MB
Hard Drive Space: 20 GB
Control Panel: RAQ Interface
Support: Standard
IP Space: 1 IP Address
Price:
$79.00 Monthly / FREE*Setup

Who already use this company?

Take a look also at their support page.
They charge you $15 for each reboot.
You may not need to reboot for months, but sometimes if problems arose you might need a lot of reboots.

15$ every reboot...
That's not THAT much.

The problem here is that 128 is too less for webhosting.

I'd say use MINIMUM 256MB, I run with 512MB on my webservers.

For serving DNS/mail the RAM is less important but for webserving it's the most important