Good ink for Indian eyedropper pens (large bottle)?

[cjabbott]

Hello All!

 

I have been using a 500ml bottle of Camlin royal blue in my Indian pens for more years than I care to admit.  I’d like some suggestions for other large quantity 100ml-500ml bottles to add to that.  They need to be easy on both my pens and my wallet.

 

I’ve been leaning towards Daytone (500ml, plus I rather like an Indian ink for a traditional Indian pen) but have considered standard Pilot (350ml). I also just learned of  Oramile (quantity/color) and Krakos (price/color).  
 

Any thoughts on these or suggestions of others?  Thanks!

[OCArt]

Do keep thinking about the Pilot inks, both the Blue and the Blue-Black are such well behaved inks and with good water resistance tool 

[Runnin_Ute]

Pelikan in their 4001 line has some large (up to 1 liter) bottles of a couple of their inks.