Manual fill airbag questions

[leftybass209]

I'm to the point where I'm debating between a static drop for the rear (ECE most likely) or manual fill bags. The reason for the manual fill, is because I'm not looking to lay my truck out or do any of that jazz, I would just prefer the adjustability of bags for rare occasions and an upgrade in ride quality. Most of the information I found here is from 5-10 years back so I'm sure there's been some improvements or changes in quality of parts available.

My questions are-
What is the cost of rear bags ($??) versus the cost of an ECE static drop for the rear ($370) or ECE rear drop springs ($120). I understand there's shock relocator brackets, drop shocks, track bar, and c notch involved for both setups.

Is there any reason manual bags would need unnecessary maintenance over a static drop?

Are there any inherent issues with bags, and do the issues outweigh the benefits of bags in your opinion?

Thanks in advance everyone!