been out and got some nexus rods from local welding supplier today, its all they do (apparently) so took them, got a carton of 2.5s and 3.2s at around 8 quid for 2.5 kilos (1 pack) so wasnt to dear, anyway went home and tried them out, on the 2.5s i tried them on the flat, turns out that their not the best of rods (in my opinion), the rod was being shaken by the arc at the weld end and they were hard to strike up, but to be fair they were good at keeping the arc once going, heres some pics -, and your opinions please 
ps, theyre quite goodat vertical ups (last pic)

ps, theyre quite goodat vertical ups (last pic)