Mark-
MPPT has a couple of extra advantages in certain conditions.
First, because it is PWM instead of pure DC, it creates less boiling, less microbubbles, at the plates. That allows for lower internal resistance and higher charge efficiency, so the batteries will charge faster (faster than they would with pure DC) and less gas will be generated.
Second, because MPPT can typically work with a wider voltage range, it can and will harvest power from the solar panels when a conventional controller would not. For instance, dawn to 9am and 4pm to dusk, when panel output may be too low for a conventional controller to harvest anything. (This depends on getting an MPPT controller, and setting up your panels to overlap in the voltage range of course.)
Third, MPPT can pull the same trick--harvesting power from reduced voltage when a panel is partially shadowed and voltage is dropped. These low-power harvests work best when the panels are in series, so the combined voltage is higher but still within the MPPT's range if the panels do get full lighting.
Yes, RFI can be an issue. But if the sun if playing hide and seek or the rain is predicted to start at noon, knowing that the MPPT controller may be charging your batteries 15-25% faster than anything else, means you'll get that much more charge when conditions are dicey and you need to grab all you can get.
Some are noisy as seventeen year locusts. Others play nice. If the seller doesn't know what they've got and there's no free return, pick another brand, with a known reputation.