This little Brown Tortoise is still a favourite and would be my pick if I was told I could only have one pen to use. It lacks the bling of the gold blind cap ring that the standard M400 have but that doesn't deminish it in my eyes.
The 1.1mm Music Stub is broad wet stub that has been thinned slightly to allow some flex. The custom grinds I have by Richard Binder are the best nibs that I own and would happily just use them day in day out. I could happily use just four of his nibs (all M250) - this music stub, an EF thinned to be flexible, a 0.7mm Cursive italic and a 0.9mm Cursive Italic.
Private Reserve has fallen out of the limelight in recent years as other manufacturers have become trendy and popular. I own quite a few of them and particularly enjoy them. They come in an easy to fill from squat round bottle.
Yes I know that it not how avocado is spelt, but Private Reserve chose to spell it with an "a" not an "o". A great dark green that shades well from this broad stub.