Does anybody have any recommendations on a reliable and relatively simple to use video conferencing system?

I have a customer that would like to set one up for his conference room and he has asked me to come up with a solution.

Thanks in advance.

While I've never used one and can't vouch for them personally, I've heard good things about "LifeSize" from Logitech.

Radview is another good one.

Polycom.

I've heard good things about Radview. But I have also heard it is pricey. Never worked with it though.

Vue Telepresence is pretty good, and very reasonably priced compared to other systems on the market.

www.vutelepresence.com is their website. They have a nice demo system and rental program if the customers are looking at that.

have sold the lifesize system, IT managers have told me they like it as its plug & play as far as getting out on the internet.

This is not allowed Ruth. The OP ask for product recommendations not a link to your site.