RIB Boat vs Amphibian boat for Glacier Lagoon?

[Mr. Click]

We are planning to visit the Glacier Lagoon in the August before our cruise.  It looks like their are two types of tours offered, an hour or so in a RIB boat or a half hour in an amphibian boat.  I am sure the amphibian will be a quieter, smoother ride but will we see more in a RIB?  Anyone tried either one in the past?  TIA.

[Mangrove Snapper]

We did the amphibian boat tour.  There are tons of icebergs in the lagoon and you have spectacular views.  The tour was approximately 35 minutes long.