I think even the MFLB will smell if you vape enough MJ in one sitting, especially if your dorm room is completely closed with no windows.
So, to make a decision based on smell is not, IMO, very advisable. I think you have to adress several issues here.
1-What will be your standard session? How long and where?
I ask this because, like HSIHP said, the MFLB is great for a quick hit, as is the PAX IMO. The main difference between these two is, the PAX has temp control and a much bigger bowl.
But if you like to take your time, a Solo, INH, or DV would be a much better option.
2- How much importance do you give to keeping a low usage of MJ?
The MFLB and the Solo are the better option in this case because of the smaller bowls and good extraction, followed by the INH, then the DV and then the PAX.
3-Do you mind hanging around with extra aa batteries?
If that is the case, dont get the MFLB.
4- Are you flimsy with your hands, and tend to break things?
Then the Solo might not be a good choice, or you should get a wood stem from Edtnt.
Other questions could be asked.. My advice to you is to REALLY know what you want, in detail.