I think saying DX lights are good value whereas trout/exposure arent is silly. They offer different products. One is a budget choice and the other is the super-bells-and-whistles choice.
At the minute I ride with DX lights simply because its all I can afford. If they last a year I’m happy because it costs less than £50 to replace it.
In the future when I have a bit more money i’ll probably go for exposure simply because they have the integrated battery pack, waterproofing and good warranty/after sales. If troutie lights had integrated battery packs, for me, they would be more enticing.