Buying a full awning

Having just bought a new van, we need to get an awning.Where we bought the van they only do Dorema, and as we are completely new to awnings i thought i should get some advice on here first. Someone also mentioned the Ventura.

I dont know how much we should expect to pay?

All i do know is that we need something thats reasonably easy to put up!

Any advice appreciated.

Mads