Earl, Sandhill also sells Poona Kheera and if I looked hard enough I might be able to find some 2-3 year old seeds here which should still be good. Your choice.
Jennifer, I haven't grown the other varieties you mentioned.
Julianna, I haven't grown the Boothby's Blonde either.
Since moving to my new place in 1999 I've cut way back on most all vine crops and just two hills of my fave Asian or Armenian cukes are plenty for me each summer since my cat kids don't like cukes.