Well, those Vetus ones come in aluminum
also, for just a few bucks more. looks like it might be better than the plastics. I currently have 35 year old aluminum
and they still work, but 2 are non-opening and the 2 that open are pretty rough looking. They're all 7-14" (I think).
Anything under $200 would be nice. 15 years a good amount of time, I doubt I'll own this boat that long (i have 2 footitis!) but for a few bucks more, aluminum would probably be the better option in the long run.
I haven't even looked at the lewmars yet, assuming they would be more expensive...