The pen addict.

I like stationary. Pens in particular but I wouldn't quite call myself a pen addict.

However, I came across a blog called 'The pen addict' and this blogger really is 'thee' pen addict.
He/She( I gotta feeling she's a she.) reviews different pens which are mostly gel ink pens of reasonable prices.

http://penaddiction.blogspot.com/search/label/Muji

This is a link to her blog post on her thoughts on the muji pen.