|What are you looking utilize the notebook/ultrabook for? That will help answer your question on which will be more useful for you.. Things like this will be helpful..|
1. What applications will you be running?
2. Are there things you will want to plug into the laptop? E.g. Other hard drives, printers, plotters, etc.
3. Will you be utilizing the device for troubleshooting? E.g. networks, etc.
4. Are you doing any type of design work where larger screens would be required?
5. Are you very mobile? where you fly and need space saving technology?
I've found that Ultrabooks (I have a Dell XPS 13) are a better fit when you dont need serial / parallel or other common in use ports, travel a lot, use for meetings & notes - and then your standard home stuff. Built-in webcam, very nice screen for movies, games, things like that. Dont get me wrong though, there are definitely setups with Docks for high level engineering, CAD / design work, etc. The 13" screen altho 1080, I would not want to be doing CAD / design work unless hooked up to the dock. Everything for my ultrabook is an add-on (not that you can't find others out there that have more than others). I had to buy add-ons so I could go to VGA / HDMI / RJ-45 / CD/DVD RW (all USB 3.0) and have limited USB ports available vs a laptop. I also get roughly 3 hours of use on my ultrabook, which is about 50% of what I get from the laptop.
I've personally found laptops (have a Dell Inspiron 6530 here) more useful when I want to be able to work directly from the laptop on anything I need. IT troubleshooting, visio diagrams, etc. Larger laptops CAD/Design work is feasible, there is definitely more ports available, built-on CD/DVD/Blu-rayNeeding to have more mobility for longer periods without charge. Lose space saving, and normally are heavier, but can also get docks for charging & monitor/keyboard/mouse combo.
Hopefully this helps a little bit, and the more info you can provide the better your question can be answered.
Thanks for any input.