Well, lets make a purty little list to list the advantages/disadvantages of all the War Ships.
War Frigate
Advantages- Plenty of broadsides and cannons on all angles.
- High Power.
- Great damage with Ramming Speed.
- Faster and more maneuverable than the War Galleon.
- Easier to miss over a War Galleon.
Disadvantages- Holds less cargo.
- Slower than a War Sloop
- Costs 60,000 gold - even with maxed gold you'll still have barely any gold left.
War Galleon
Advantages- Holds the most cargo out of all the ships - rakes in gold the fastest.
- Has the most broadsides, with plenty of cannons.
- Costs 20k less than the War Frigate.
- Plenty of armor.
Disadvantages- Easiest to hit out of all the War Ships.
- Still costs 20k more than the War Sloop.
- Slowest of the War Ships.
War Sloop
Advantages- Cannons on the sides and "front."
- Fastest of the War Ships.
- Easiest War Ship to maneuver and dodge other cannon fire.
- Cheapest of the War Ships - only 20k.
Disadvantages- The "lightweight" of the War Ships - easiest to sink if you manage to hit it.
- Not as much fire power as the other War Ships.
- Only one mast - if the other ships manage to knock it down, you will be left with not much sail power.
Now, its time for my ruling! And my decision is.....
Go with what fits your sailing style. If you like to "Hit and Run" the other ships, you like SvSing, and/or you like ship races, go with a War Sloop. If you want to get a War Fleet, with gold to spare, and you like to challenge yourself when you sail, go with a War Galleon. If you like gathering with your friends/guild for a plunder party, you love to sink the other ship as fast as possible, and you want to drive a comfortable ship, get a War Frigate. I know its hard to decided what you like, so just look at what you do most often. Good luck matey!!