Maybe someone here can help... maybe not, we'll see :)

I'm looking to get a new notebook to replace my aging 15" MacBook Pro. While it's plenty powerful enough (but lacks enough memory), it's also on OSX. I want to go back to Windows 7.

It won't be used for a great deal - Eclipse will be its main use. My question is: Will 13" be sufficient? I've tended to find 1680x1050 pretty difficult even on the 15.

I'm also after suggestions of options. If I went 13" it would be purely so I can go with an Ultrabook. The three main options I'm looking at would be a MacBook Air with Windows 7 on it; An ASUS ZenBook, but the lower res screen is a downside; and a Toshiba R830, because it has WiDi.

Other requirements would be that it's an i7 with 8GB RAM and an SSD.
Perhaps others have seen a few that I've not spotted yet?

I'd also certainly consider lightweight, high-resolution, small-bevel 15" notebooks/ultrabooks.

Eclipse as in the programming IDE?

Really it comes down to resolution, not screen size. 1680x1050 is pretty small on 15". You could always just run a lower res - shouldn't really matter if you're programming, right?

Eclipse on 1440x900, which is what I'm on right now.

Hrm, yours seems to make better use of space...

edit: Oh wait that resolution's huge. :P

1600x900 on a 13".

Ouch, you'd need superhuman eyesight to read that screen, surely?
If you're used to 15" now I reckon it'd suck to drop down to 13", at any res & you'd probably regret it.
Plus, if you change away from the native res it can make the image too blurry.

Ouch, you'd need superhuman eyesight to read that screen, surely?

Modern Operating Systems are resolution independent. Why do you think they give us 4096x4096 icons and other resources?

As for efficiency, totally, but this is only for while I'm on the train etc, so I can get some progress made.

Eclipse is an IDE, primarily for Java development but with support for a heap more including GWT and Flex development.

Yes, I've recently started using it for a project.

Don't laugh, I may be prepared to do so. Maybe not enormous fees, but on-the-side pays a few cartons of beer fees - it's a personal project, not for work.

In fact I was prepared to pay someone to help me get the same project working with XWT. I actually gave up and moved it to GWT because XWT was too problematic.

blerk @ GWT.