Best of best in my opinion is Combat Samurai Island (C: SI), because I care about quality of combat system and it is all about skills to be a good fighter, not by money. You want to be good, you need to train your skills, if you are well skilled and smart, and fight in a decent condition ( at least not worse than mine with old laptop and bad connection, still, doing not bad and won't ever leave CSI) you will be one of the bests soon.
And we can check our and others' stats from their website http://www.combatsi.com/e107/weeklyStats.php (Take a look at weapons, can find In-world or on marketplace)
Most of weapons cost 800L, but trust me, it's one of best things you can buy with 800L, not expensive at all for awesome and beautiful weapons (look better in-world)