Favourite pen (from an admittedly small collection) is a difficult decision, as there are two which have great sentimental value, but neither is my favourite in and of itself. Sentimentality aside, it's a toss-up between a Parker 45 with a gold Flighter nib bought from our returning manufacturer of Bay Rum AS which is incredibly smooth and is nicely wet (I dislike dry nibs), and a late-'40s US Waterman Stalwart in blue marbled celluloid which, despite being marketed when new as a kids' pen, has a wonderful vintage semi-flex (much more flexible than most modern full-flex) 14K nib. As regards inks, Waterman Serenity Blue isn't an exciting ink, but seems well-behaved in any pen and on most papers. I'd probably choose my most recent ink purchase, Montblanc Lavender Purple, which, despite its name, is a dark plum shade which combines smartness with being something different to the standard colours most of us use most of the time.