Then the question comes down to used or new. On new, there are more choices every year and for the most part, they are all good and most require the 209. As you already know, your Dad's Firehawk is great shooter and you can still find then, used. In new, might want to take a look at the TC Omega Family. Thankfully, I am down to one In-Line rifle and that is what I'm sticking with. It's a TC Black-Diamond and I have the option of all three primers. ....
Good luck and;
Be Safe !!!