Hi,
Not sure if you are looking for a 'notebook' style unit with a physical keyboard or more performance than an Eee PC, but anything that performs more than your Eee PC or has a better cpu (like a real 'notebook'), will likely be generating more heat and noise, so you may need to choose between performance and noise.
If you aren't as worried about performance (or onboard storage?), you may want to look at the ASUS T100TA if you haven't already which is a Win8.1 tablet with a docking station, so you can use it somewhat like a notebook, but I wouldn't consider it equal to a notebook, so you will want to make sure it meets your needs and physically check the unit if possible.
At least you should find it's very quiet.
Anyway, hope this helps.