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There's really no problem with replacement parts--either available locally or easily ordered and delivered to your doorstep. And there's really no "extra" maintenance per se.
That's very good news!
The other issue is very personal. You can buy Subaru WRX that goes 0-60mph in 5.1 seconds or a BMW M3 that will get to 60mph in 4.8 sec. The BMW costs over twice as much. Is that extra tiny bit of performance "worth" it???
At the risk of repeating myself, performance is not necessarily the primary goal. Most people don't drive BMW because of performance, but rather for look, style, finish, safety, appeal... so in summary, to look cool!
I guess the same goes for boats.
The F16 will SAVE your back, vs the weight lifting challenge of the 400 pounders.
(lower herniated fluid disc's are vulnerable, be careful)
This part alone is worth the the extra price, IMHO.