I bought the CrossCheck because it had

*eyelets and braze ons
*horizontal dropouts
*DT shifter bosses
and
*canti bosses

Cantis were only important to me because I already had a wheelset, non-disc, that I wanted to use. This sticking point might keep me away from the Salsa La Cruz, too.

DT shifter bosses (I bought a frameset to keep cost down) so's I could go geared when I wanted with parts I have.

Horizontal drops for SS riding in winter.

*eyelets and braze ons folks could do without, but I ride with my daughter in a seat rack, so it was mandatory to have eyelets for that.

You should check out the Salsa La Cruz. It's a bit more on the old budget, but you'll probably like it, and I think provides the best of what's available on both the Poprad and the Crosscheck.

Do you need the accessories of the Xcheck like I did? The Poprad is a nicer riding bike, IMHO.