I've had this phone for about 18 months now and I think that it has fulfilled my standards.
It is a great phone that is really easy to use. A downside is that when you have had the phone for over 6 months, things begin to go wrong; such as the screen suddenly shutting down for a couple seconds. This has happened in a number of different situations with other people too.
Eventually key buttons stop working which can be a nuisance. As I said, the phone is very easy to use but I would recommend of that you plan of owning this phone in the short term rather than for a long period of time as problems occur.
The phone also tends to scratch quite easily, so I would recommend for you purchase a case with the phone if you are looking to buy it. The Walkman is very useful in having your favourite tunes just one button away.
The 3.2 mega pixel camera is fantastic in daylight but is absolutely terrible at night time even with a night mode function. I found the keypad brilliant as I text alot as apposed to calling.
I would definitely tell my friend to purchase this phone as it has great applications, a shake mode, great design and it works pretty well overall as slider phone.