This looks pretty interesting. The touch screen not as good as the ones on the iPhone or the HTC Hero, which is a shame, but the CPU is faster than the Hero and on par with the iPhone 3GS. The Maemo interface looks more like a proper OS than Android on the Hero or the iPhone's OS. Like the Hero, the N900 also has Flash, but probably runs it a bit better due to the faster processor. The N900 also has a 800px screen, which I believe is better than both the iPhone and the Hero.
Some people like hardware keyboards, but I don't like the additional bulk they require. The Hero and iPhone are consequently slimmer, and have less moving parts that can break. The Hero also looks like it has a better quality case. The N900 and Hero are both unlocked, which is a welcome change from the iPhone.
Overall, I think I'd still buy a Hero over an N900... but I admit Nokia's offering is tempting.
Some people like hardware keyboards, but I don't like the additional bulk they require. The Hero and iPhone are consequently slimmer, and have less moving parts that can break. The Hero also looks like it has a better quality case. The N900 and Hero are both unlocked, which is a welcome change from the iPhone.
Overall, I think I'd still buy a Hero over an N900... but I admit Nokia's offering is tempting.