I have both of these handhelds and am trying to decide which to get rid of and which to keep for emulation. The Go already has custom firmware and a 128gb SD card but it loses connection from time to time because of a poorly connected ribbon cable. The 1001 is on stock firmware and needs a new battery.
Keep the 1000. Easier to find parts for. There's an IPS screen mod out for it. Could do a big battery mod. CFW is easy to put on there.