During my career I've worked for several airlines, which included two Low Cost Carriers - one in the USA and one in Asia. I'm not talking about the cheap airlines (Valuejet, Vanguard, etc), where some folks actually paid the company to fly, but the new age LCC's
Both were good experiences with top-notch management, and aside from the food (lack thereof), they were good quality operations.
With those two examples, I found that the salaries for Captains was comparable with most any other airline operating similar equipment. For F/O's however, the salaries was typically less.
For a freshly Type-Rated pilot, the LCC's may offer an opportunity to gain some experience which would open an otherwise closed door at a major or with a contractor.
Personally, I enjoyed knowing that I'd be home each night; not living out of a suit case for days on end. Some may see this as a positive, some may not.
Best Regards