I have a few questions, so that I may be able to help you.
1- Did you remove the red plugs from the little giant?
2- What did you run the humidity at during the first 18 days of incubation, and also what is your room humidity in the room the incubator is set up in?
Those are some things to consider. I removed the red plugs from the LG around day 10, after I added the fan I never put them in. I dry incubate, and I do not add any water until day 18, when I add water to bring the humidity up to about 45-50%, but that won't work for everyone.
If the egg has been pipped since last night with no progress, I would definitely check it. I open mine all the time during the lockdown process to remove hatched chicks and add water. I have had an occasional chick get stuck, when that happens I rewet the membrane and assist only until they can get their head popped up out of the shell, after that I lay them on the floor and let them come out on their own.
As far as a better incubator, they can definitely be costly!! I researched for months the one that I wanted, and even contemplated just making my own cabinet incubator, however, I came across my roll-x as a deal on craigslist for $150 and couldn't pass it up. I got it in may and it has hatched out 80-100% hatches since. I did make a cooler-bator which was fun, and it hatched out 100% with its first complete hatch!! But it took a lot of tinkering to get it right.
Hope that little peeper is out for you now!