Mobile receiver performance has a lot more to do with how you put your mobile together, than is does the specifications of the receiver, or its noise blanker.
Bonding and other noise abatement procedures go a long way toward the goal of a "quite" mobile. I have an upcoming article on bonding, which should be posted in the next week or so. If you want a primer, visit my web site.
Alan, KØBG
www.k0bg.com