My understanding is that Lasting PofA has superceded Enduring; but there will still be people who signed the latter in the past.
I did ours - both for property and care issues for both me and my husband. It is not difficult, but you do need to follow the letter of the instructions, particularly over the order in which things should be signed and witnessed. I drew flow diagrams and ticked things off as they were done.
I also claimed a reduction in the fee on the grounds of income and that went through with no problem at all. Costs more, but some people feel happier doing that.