I prefer a desktop to a laptop, because of the durability. I've used laptops, and simple every day use of moving them around, shifting them, and what not, cords get loose, the connections wiggle out of place, etc, etc. I'm a desktop person, 100%. Hubby, on the other hand, loves being in the recliner, so he's all about the lap tops.
17" is bigger than the one I have now, which is fine as it is, so I think a 17 will be great.
SOooo not an apple girl.
We aren't really good at the hardware. We know our software good, but the hardware we aren't confidant enough about. I do have a friend who "claims" to be confident, but of the 3 machine's she has put together, none has lasted more than a year before burning out. No way in hell I'd let her build me one.
If we knew more about it, I'd love to just build one. But I don't think that'll be an option at all.
Also, we are on cable, the highest one we could get.

I'll NEVER go back to dial up
We like the Dell's a lot, but honestly, for the price, I'd rather just go with something a bit cheaper. When I stated out the dell with what I wanted, it was coming in more than the northgate with less stuff over all. Granted, Dell is a very good brand, and very good about replacements.
Compaq's... well, when we bought the computer we are running now, 4 years ago, we had just had 3 different friends who had bought Compaq's within about 6 months before us.
Compaq #1 was sent in for repairs (under warrenty) three times in that 6 months, all problems that were hardware problems. First time, the fan went out, next it was a bad memory sector, and lastly, the power source. She got rid of the computer after trip #3, and got a whole different brand.
Compaq #2 was only sent in once, in about a 4 month time period. I can't recall what the problem was, but it was just shutting itself down. Now, I'm thinking that the fan went, which was causing it to over heat, etc, etc.
And Compaq #3 had the hard drive go within about 7 or 8 months, I want to say, and then the power source went almost immediatly after they got it back.
That right there was MORE than enough for us to say: No, Thank you.
I'm sure they are good computers, but our own experience in hearing how rotten they were then, well.. that was enough.