The 5 GB and 10 GB models have sold out, but there are still (at 5.30) some 20s.

They are going for ?237.70 + VAT (eg ?279.30, shipped, with remote and case). That compares with ?248.99 for a new 10 GB, or ?299 for a new 15 GB.

Pros:
Many people regard it as having a much better UI with the buttons round the wheel.

Many regard it as being better looking.

No snap crackle and pop. Less affected by the Euro volume Cap?

Increased battery life, and easily obtainable replacement batteries.

Owning one marks you out as being nearly a member of the Poderati (you need a scroll wheel to qualify for that distinction, really).

Cons:
'Last year's model'.

Heavier and slightly thicker.

Although accessories are easily available now, they may become less so.

No dock. No USB 2 compatability. No OTG playlists.