You should, of course, get what appeals to you most. That being said, I have personal issues with the high performance rimfires.
In .22 Magnum, I don't think you get enough from the round to justify the cost. And that was back when it was $6 a box, not the $10+ it is today.
I am a dedicated reloader, and if I want more from a round than the .22LR gives, I go to a centerfire cartridge, and just load it to the level needed. I can load .22 Hornet or .222 Rem to the level of the .22WRM, cheaper than I can buy the .22 Magnum rimfire, plus I get to reuse the brass, over and over!
I don't care for the sub .22 calibers, again, a personal thing, but I can't get over the history of the 5mm Rem Mag. Yes, I'm old enough to have lived through it.
If you don't remember it, it was a really cool, kick ass performer (for a rimfire), but it was .20 cal, so a) regular common .22 cleaning rods were useless, and b) Remington was the only ammo for their rifles, and after a few years of poor sales, they stopped making both.
I can't help but wonder if something like that isn't going to happen to the .17s, once the "new" factor wears off in the general buying public.
Today, a box of 5mm Rem Mag ammo is worth almost as much as one of the rifles to shoot it in, and the rifles aren't worth much without ammo.
I'd put that $100 towards somthing else, but that's just me.