Jim,
Presuming that this is NOT just an "intellectual exercise" & you want to buy a first crossbow for yourself, you could do FAR worse than a used HORTON YUKON SL, 150# X-bow.
(Yukon SL X-bows are frequently sold on ebay.com in good to "as new" shape for less than 150.oo & other than occasional new strings, they need little maintenance/repair.)
Horton Yukon's have taken every sort of BIG GAME imaginable from CAPE BUFFALO, GRIZZLY BEAR, RED DEER, ELK and even 2,000# FERAL BULLS to all sorts of smaller game, without having all "the bells & whistles" that the "fancy" modern crossbows have.
(It efficiently puts down WTs & feral hogs farther than you can see, where I hunt in the south TX brush country.)
Fwiw, I paid 160.00 in great shape some years ago, out of an estate sale for mine (and including 18 new fiberglass arrows) & see NO good reason to replace it with something "faster" or more "modern". - Other than a new string & a used Horton scope for 30.oo, I've spent nothing more for my "XB system".
(The old Horton is good enough that if I miss what I'm aiming at, that it is solely MY fault & not the X-bow's.)
But of course, I'm "too much of a cheapskate" to buy "fancy" over "functional" and as my grandfather used to say, "You cannot kill a deer deader than dead.".
ADDENDA: Also, IF you "have a thicker purse" & carefully watch https://www.allofcraigslist.com, you can often find VERY NICE Excalibur XBs in good shape for 400-600.oo, as two of my friends recently have.
just my OPINION, satx