I must be stuck in the '90s :)
I still find that FLA is the most cost effective chemistry when you look at cost Vs capacity and longevity.
The various Li varieties are very interesting to the geek in me. I have seen some hobbyists coble together some slick BMS setups. I just don't have the time or interest in going down that road.
If you are severely limited on space or weight capacity then the higher energy density starts to become attractive.
I am fortunate there. My 24v - 430a/h FLA battery bank fits nicely and cost just a bit over $800 including shipping. I live in a pretty remote are so shipping can be a killer.