SandJ Rhed
Just don't buy the multiliners. I did, and I found the tips to bend, fray, and dry out WAY too easily (and I am hardly rough with my pens.)
I have honestly NEVER had this issue with my multiliners... I've got a set of four (well, five now, but I haven't used the new one yet) SP Multiliners, as well as one free basic Multiliner that I drag around and use for detailing and various other elements in my work.
I will add, I have a very light touch with my pens; my primary inking pen is a Pentel Pocket Brush, and you can NOT press at all with one of those... But either way, my Multiliners are still giving me beautiful lines.