If you want a melee, Crusader is a good all round class. It's main strength is probably it's bleed skills but the one downside to those is that you can't use them on most Insane and World bosses. Assassin is another option but unless built properly, it's not as strong on the survivability.
I don't play either of these classes so the real players will be able to give you a better idea

Hmm, Thanks Sedy for the opinion ^^

Levelling wise I'd say sedy's right that Crusaders are pretty well self sufficient; bleeds and soon HP% Abs makes them not need looooads of potions at least. Not so sure in dungeons; I havent gone with them on serious ones. Good with PvP due to skills.

Vanqs are a bit slow/sluggish but makes up for power. I'd say in PvE its not as nice, but PvP yeah its pretty useful. Dungeon wise so-so.

Soul Bladers, high att speed and pretty decent damage; Id say these are fun to tinker with xD Their skills are cool too.

Myrmidons, ability to have both magic and phys attacks; i quite find them more versatile than SB but i'd rank both sB/Myrm of them nicer than 2handers for survivability.

Wind walkers, and Assassins are nice for PvE and PvP but need to be built properly since they have low def; theyre mostly build for eva and packs really good debuffs and crowd controls. Attack wise they fall short unless their debuffs all stack up. Bit expensive to build properly since a lot of players are mail users--but theyre fun classes and needed in a lot of PvE stuff.

Templars and Champs have ridiculous HP survivability; best for PvE and good PvP enemy control and support. Attack wise its decent, but low in the spectrum of all melees since their power comes from def, hp and control skills. Templars are more intune for PvE while Champs are better for PvP; but both do spectacular. These are cheap to build--bit harder to level up; but very useful and wanted.

Gunners, Sniper and Sharpshooter are nice ranged phys attackers (not sure if youre gonna count them as "melee" but yeah ill include it XD) they have range power, good crowd controls. Bit of a leeway between Sin/WW and magic dpsers. therye quite nice, cheap to build too and pretty easy for levelling. Power wise; they have the same as a Sin and WW with all debuffs up. I find them awesome as support PvP and PvE ^^

*salute* hope this helps =D

Damn, Nice pros and cons. Thanks ^^