If you buy a 'new' second hand one the warranty continues i think.

I wouldn't worry about N900 being outdated. It still does things other phones don't do so that's not an issue, and sure, some components may be outclassed later but honestly, so long as they work, does that matter? What i mean is, the screen will still be good and reflect sunlight, it'll still play a range of media formats, it'll still support wireless streaming, it'll still have a great camera, it'll still do Skype video calls (which no other device currently does), it'll still do everything. And you can OC it to make it faster. So what really will other devices do better? That's not to say things won't improve with other devices, i just mean yours won't run any worse, and if you have a N95 today you'll know what i mean!

I think that's a far greater issue for Android really. Every week a new Android device out that supposedly beats the last one, can you imagine being in a 2 year contract to a device that will have inferior hardware the next month, or week? No thank you, not for me!

And anyway, if you do want Android, stick it on the N900. I have no doubt MeeGo will be ported too, just maybe not officially - but you already said that doesn't matter. So essentially, you can have the latest and greatest software, but the hardware may be old. But hey, when the hardware does what it does, it doesn't matter. At least, not to me.