Better in some regards, worse in others
Ali is:
noisy and expensive
not tolerant of minor design flaws or stress risers (welds can crack)
cold in cold water, hot in tropical sun
hard to reweld later once its been in use due to surface contamination of the metal
hard to make complex hull curves
hard to find compatible antifoul (can't use copper based paints)
risks galvanic corrosion if you're not careful in construction and add-ons
very light weight can may equal better fuel economy or higher speeds for a given HP
highly abrasion resistant
no gelcoat to chip
doesn't need wood or foam cores to create stiffness
paintable if you need color
no blisters
recycleable at the end of its life
Probably some other pluses and minues those are some off the top of my head.
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