I got my first meter a fluke 177 in 1984 when I took my first High School Electronics Class. It lasted until an accident in 2004.
I then was given a 179 which I have had since then.
The first 177 one cost me a few dollars a year, maybe a fiver if you count the 3 batteries I put in it over the 20 years I owned it. I can't count how many boat problems it diagnosed.
My 179 is as good a meter. Clamp on is nice for somethings, but not really all that necessary for most boat electrical systems or electronics. Cost per year of this meter so far. $30.00 I am fairly certain bar some accident again, it will end up costing less than $15.00 a year. I have used a lot of "just as good" client meters, and almost every time after messing with their meters for few minutes, reached for mine that always works. I like the 179 a little better because of the Temp functions, which I have used in a variety of situations.
For what most boaters know how to do with a meter, the 115 would probably work for everything they need. At less than $150.00 cost per year would probably work out to less than $7.00
Could another meter brand last you 20+ years, probably, but I know this one will.
I also have a $19.00 meter fold up style that I got at Radio Shack, that is the only one that ever leaves the boat NOT IN MY hand. It has failed to come back several times and been replaced. Also been through a couple of them that just quit working.
I never really use it, so don't count it as one of mine. LOL
Guy