I might as well just use my n800 and cheap small phone like I do now, it does most everything I need. The n900 is nice but it is much bigger than my cheap phone, so n800 and n900 I'm taking up more space and $600 for fairly redundant stuff, and really I use the wired ethernet and usb serial everyday, multiple times, so it is not 1% for me. So I might as well have it all on one device, my phone now serves as data and occasional phone mostly through BT headset, so it's a device I never actually touch. Having some important functions on two different devices that one needs to interact with directly is pretty stupid for my needs, I won't waste $600 bucks for that.

Sure I could ssh into my n800 while it's hooked up to wired ethernet, from my n900, but then that means I've set my n800 down and will likely just leave it there and forget about it, and then I'll have to go get it. This was one of the huge pluses for me of the n800, it is constantly in hand, so I don't even have to think about it, and I have to move all over the place and do things, so this is a key consideration for me.