Unfortunately, my dealer only stocks two brands of cartridge: Rega and Dynavector, and I have an initial shortlist of one! Or, to be precise, two variants of the same model - the Dynavector 20XL and 20XH. If I have a HiCap by the time I need a new cartridge then I won't bother listening to the high output 20XH. Given that I love the 17D2 but dislike the 10X4 MkII I can't imagine what the 20X range will sound like!
If the 20X is unsuitable then I may have to look elsewhere - perhaps the new Linn K series if it actually exists. I can imagine such a cartridge being a worthwhile stopgap between my present K9 and a cartridge of 17D2 calibre.
This may not be for a long time, though. In fact, if my K9 wears out within the next few months I might replace it with my Rega Elys, which probably has a year's life left in it.
--Jeremy