Do you think that z555.com is worth to deal with?

I would like to consult with experts here about my choice of web hosting provider.
I need not so much resources: 7GB space, 100GB bandwidth, Linux.
One of my friends suggested me to choose z555.com, but I am still hesitating to trust them or not.

Where can I find customer hosting reviews about them?

Are they reliable? or not?

I have never heard about them before.
If you ask me, I prefer to focus on something much more important, reliable web hosting and great customer service.
Ultrawebsitehosting.com will be good choice.
I have used several other hosts, but none offer the rock-solid operation that this host does.

Give them a try, why not?