My better half has the E72, she loves it, it replaced her N95 classic, she finds it easyer to use due to the qwerty, its the first qwerty shes had.
Its alot faster than her old N95, the UI is smooth and fast, build quality is first rate, it looks great next to the N900.
Im due an upgrade Monday here in the UK, quess what its going to be? yes a silver Nokia E72 to compliment my N900.
IMO its well worth the £300 pounds.