Favorite Speed Rating and Film Developer for Double-X?

I like the high contrast and sharpness of Double-X. In Europe you can get it at Analog Amsterdam as 30.5m bulk rolls or 135-36 for a good price.







Rollei 35 T, Double-X, ISO 250, Adox XT-3 (Xtol) 1+1, 12 Min. (quite overdeveloped. 10 Min. would be better). The faded highlights are caused by stray light inside the faulty Rollei 35 (fixed now).

Praktica MTL 5, Zeiss Jena Flektogon 4/20mm
Double-X, ISO 250, Adox XT-3, 1+2, 14 Min.
Scans from the silver gelatine prints.