LetgoMobile have written an interesting 4 pages review on Nokia 5700 XpressMusic.
And the conclusion is:
"The Nokia 5700 XpressMusic is a true music phone. With two speakers, the sound quality for music can truly be called good, the Nokia 5700 is true to its word being a multimedia mobile phone. Also the remaining functions of the Nokia 5700 XpressMusic are well thought through and work excellently. I have a few remarks about the camera. Even though the Nokia 5700 XpressMusic is not a digital compact camera, the performances of the camera are regularly below the average. I have seen better with comparable devices. The twistable button part is a fun gadget and makes most people look astonished at what you are doing with your phone. At the same time a lot of people will say that it will break quickly. But the Nokia 5700 XpressMusic feels solid and nothing indicates that the construction will damage easily. Altogether, the Nokia 5700 XpressMusic is a mobile phone with many features that will intrigue the user. The Nokia 5700 XpressMusic is truly recommended! "