Hey, if you want to print the finest things you could switch to a other noozle diameter.
Regular Noozle is 0,4mm. Noozles seems to be standard-size thread, look at this
So, if you want to print fine things, try switching the noozle first before buying a new print head.
I haven´t tried 0,1mm noozle yet.- 1mm und 0,6mm works great for fast massive prints.
Greets Chris !