@DlaurenSG Greetings from Pittsburgh! You would have fit right in at a Steel City Nibs meeting here a few years ago when we had an ink-swap night.
Of course, FPN's own RonZ was just sitting there twitching all evening, because as a repair guy, he (understandably) mostly always wants to use the same ink for testing -- Pelikan 4001 Royal Blue (when he gets "wild and crazy" he'll use 4001 Brilliant Black... ).
Me? My husband tells people that the pen collection was just the "gateway" to the real stash -- the ink collection....
But yeah, finding the right pairing of pen and ink is sometimes interesting. My first "expensive" pen was a 1990s era Pelikan M400 Brown Tortoise with an F nib; my husband was freaking out a little over the price -- but it was for a special occasion and I told him, "Oh -- this is WAY cheaper than a NEW M400 would be! And they don't make the Brown Tortoise any more...." Then what did Pelikan do a few years ago? Make a liar out of me by re-releasing the M400 in that color.... ). I was going to use it for drawing, but the original ink I put in it, Iroshizuku Yama-guri, was just WAY too wet for the pen. But when I put Noodler's Walnut (a very dry ink that I had originally tried in what I didn't realize at the time was a very dry writing pen) into it, the pen coaxed flow out of the ink, and the ink made the F nib less of a gusher (Edelstein Smoky Quartz works well in that pen too).
Ruth Morrisson aka inkstainedruth