Played for a good 90-odd hours now, I'm wondering, how would everyone rank the weapons?
For my money, I'd go:
1: Saw Cleaver -- extremely versatile move-set, with effective vertical and horizontal swings on each weapon form. Probably the most practical at it's base form, just R1'ing most enemies is so damn good! I picked it as my starting weapon and it carried me single handily through at least 60 hours of my playtime.
2: Ludwigs Holy Blade -- Not a huge fan of the standard long-sword, but the greatsword form is phenomenal, this would have been the kirkhammers slot were it not for Ludwigs charged R2 advantage. Pulling it off and going right into a visceral off pure damage nets the best feeling of satisfaction I've gotten out of Bloodborne.
3: Chikage -- Honestly I'm probably better with the Hunters Axe or the Tonitrus, but the transformed Chikage is just so damn interesting conceptually. The blood dripping from the blade while your health deteriorates might not sound like fun, but running around un-sheathing the blade, getting a few swift hits in, and then sheathing it before the enemy vaporises while noticing your health has barley ticked down just makes you feel like a bad-ass.