Going to resurrect this.
I cycle in and out with fountain pens. More recently, I restored an old Schaeffer Balance vac-fill pen, and am quite liking how it writes. It was one of those things that sat on my "to do" project list for years, and while I wish I'd had it to write with sooner, I'm glad I waited. 21 year old me would've definitely screwed up that repair.
Before that, I had a Parker Sonnet, which I liked for its writing characteristics but developed some leaking issues the second its warranty period expired. I replaced that with a cheap Lamy Safari, which I also liked, but was a little too plasticky to feel exciting and special to write with.
Since I'm left handed, I've pretty much exclusively used Parker Blue-black quink, since it dries almost instantly. I also like the color of it enough to not really have any desire to seek out others. I did go through a phase where I really wanted a dark and vibrant green ink, but have given up on that, since every one I wound up trying gummed up my pens.