I see that Rotring 600 Trio is a 3 in 1 pen. I have a 4 in 1 pen made by stylus plus. I need something with a bit better quality through, I wore the outside on my first one then the clip popped off and the latch spring popped out and flew away. They replaced it and I have been extra careful with it now. I would like to know if you have any suggestions as to something a bit better quality while still a 4 in 1. Anything maybe take gel refills with different colors, I use uniball .2mm gel pens a lot, if I could find simila in a 4 in 1 type it would be great.