Digital BW, The Print

I am pretty new to digital BW printing so it might appear a silly
question but I wonder what are, generally speaking, the differences
between using a RIP (QTR for example) and the ABW of Epson printers. 

Then, and more specifically, I am interested in knowing if it is worth
going for a RIP or laying on the ABW of the Epson R3800. I Will be
printing BW both on matte and semi-glossy papers.

Thank you all.