Despite these being instant start, they still have a long lifespan.

Nice, alwyas good to see the ones with the 'm' shaped bends. The ballast casings on these also look like they'd be pretty easy to open compared to other CFL's.

@Oliver: Yep just like any 2000s era CFL even on instant start they do last a long time (from the well known brands) @Beta 5: Indeed I like the m shaped ends cos it is very unique design and the casings do look like an easy job to open if I ever need to access the ballast