I replaced by 4 year old – once repaired FoC – Joystick at 325 lumens with a new but last years stock diablo at 1100 lumens. Paired with my 3 year old Lumi XPG 900 lumen single bar light. Riding in the FoD, you REALLY need a helmet light if you want to see round corners! The Joystick was great, but used to get a bit ‘lost’ against the Lumi. The Diablo is awesome although run time on ‘night-sun’ setting is only an hour so you need to power it back a bit when not descending.
The Diablo was discounted but still expensive compared to the lights shown here. And the Lumi was about £200 when I originally bought it. But riding at least once a week for six months or more in the dark, in all conditions, getting them wet, muddy and occasionally bashed by shrubbery I just want something powerful enough, totally reliable and backed up by UK support.
YMMV etc 😉