In my experience Lagoons are typically better and more solidly constructed than FPs, especially the interiors. I have been running a private 420 for several years now and have been constantly upgrading all systems.
I take care of all the technical aspects. In a previous life I did warranty work for Lagoon
and technical work for some of the large charter
Be aware that there are two different hull
shapes and two different rigs for the 420.
Both items make a difference in the speed department. The owners version with three cabins is the most desirable one.. There are also different levels of equipment
(number of lifelines
aft, handholds on the stainless pillars, etc) depending on the version.
They will never be fast, but can be made to scoot along at a respectable pace with the right sails
. To be comfortable, avoid all weight forward. They can also be made very green. I have every luxury aboard (2 fridge + 1 freezer
machine,etc, but run the generator
usually only once a week for a few hrs while I make water
and do laundry)
Remember that Yanmars are always preferable to Volvos and generators used in charters are usually dead at 6000hrs, even if they still run. Onan generators in Lagoons are at the absolute limit of the suction capability of the salt water cooling
pump and consequently need regular impeller replacement( every 100/200hrs) unless you want to dismantle the heat exchanger
every time the impeller shreds and you have to look for the missing pieces that will block the heat exchanger
. There is an easy permanent fix, but that is a thread of its own.