5th Generation Makerbot Replicator - Noise & Smell issue

[zinchan]

Hi All, currently im planning to buy a 3d printer...base on my budget and after some research, I think 5th generation would be my first choice. However there have somethings that im not sure:

- does it noisy when printing? or its acceptable ? because I saw the movie of ulimaker 2 and its super quiet...Does 5th print as quiet as this
- since its is not a enclose printer, im wondering any choking smell when printing?

I knew that Makerbot Replicator 2X is Six-Side Enclosure and I assume it should be more quiet and less smell when working. However the printing size is smaller than 5th generation.....are there any accessories that I can buy to make 5th generation become enclosure?

Can anyone help me make this decision??
Thanks!