If you want a 19 foot centre console that will eat everything mentioned so far for breakfast, check out the Jackaroo 590 CC. I have been in this boat and its really soft riding. I think they have their demo boat for sale still so you could get a bargain if they still have it.
You cant compare anything aluminium to fibreglass, and even then theres good and bad fibreglass boats. The best tin can is not going to be as good as the worst fibreglass boat.
If you were considering smaller the Haines Hunter 525 Prowler is a little beast too.
But if you have a good chiropractor that offers mates rates, and you like watching good glass boats pass you by while you are copping a flogging, go for a plate tinny.
The plate v fibreglass ride also depends on how fast you think you need to go, gone from a HH 560 Classic Offshore to a Tabs 5.3 runabout. Using for same use offshore but just need to slow down a tad, trim correctly and you would be amazed in the little difference.
If I had 50k and was looking for a centre console boat in that size range I'd be sending Noelm a PM. He said he was thinking of selling his 18ft Shark Cat CC that he restored. You'll have plenty of change out of 50k too.
Democracy: Simply a system that allows the 51% to steal from the other 49%.
Have a look at Javelin boats they build a 5.1m self draining floor big fuel tank and built for offshore, better than hooker for their size.
i would definitely second what lovely80 said, I'd be in contact with noelm about his cc sharkcat, twin 90 suzukis. And plenty of change out of 50g to get any extras you'd like.