I've been a mobile DJ since 1982. Since then I've used and seen a lot of fantastic effects. For brightness. Value, reliability I love my Constella Pro Twin. I bought this in 2001 from BaZ in Lowestoft for £150 and it's been a regular effect since then. In 13 years of service I've changed the cheap 250w buld twice.
If they still made them I'd buy another. Abstract did a similar Twin Fx light