Delfi-n3xt decoded fine down to 5 degrees elevation using a 2x6 elements beam + pre-amp + FCD + SDR#.
I like the Delfi-nx3xt decoding software (DUDe) a lot. Together with the RAX/Mcubed decoding SW (from James Cutler) this is the best out there for us (IMHO). Compliments to those teams! (due to the format Delfi-n3xt is easer to set up, as you don't need to have the TNC switch to KISS mode)
Less tumbling as Funcube-1, I for Funcube-1 I need to switch polarity regular for strongest SNR, Delfi-n3xt is more stable (can leave it in the same polarization all the time).