It's all about fit and personal preferences, but...

In terms of N95 respirators, some of the better current ships from / sold by Amazon.com options are:

3M 9105 | 3M 9211+ | 3M 9205 | 3M 9502+ | 3M 8210 | 3M 8511 | Moldex 4200N95 | Dräger 1750

EDIT: fixed Dräger link -- I added marketplace codes for ships from / sold by Amazon, but Dräger sells directly through Amazon like Halyard and BNX (Accumed), rather than Amazon being a distribution partner like their arrangement with 3M... So I needed to use Dräger's marketplace ID on the link.