For years I had a AA battery powered loon light. Whichever one was the cheapest at the fly shop. This one is far more powerful, feels good in the hand, stands up on the table well, and I love that it's rechargeable and gives you a red light indicator when it's starting to lose charge.
Cures fast and effectively.
I use UV resins extensively, and even though I wasn't thrilled with paying $48 when I already had a UV light, I suspected I'd benefit from more power, and I can confirm it absolutely was worth it to upgrade.