I have the ltr visa. My insurance is issued by a thai company which is specific for your ling term residency here. You will also need to prove this every time you enter the country if you opt for e visa from you country embassy or you collect the stamp at boi in bkk and then no worries about it at all.
This visa offers many advantages and one in particular that is now a problem for many is that your tax exempt on any overseas earnings and tbh is an excellent option if you want to stay long term and the criteria is met.
Good luck with it, it is a big task gathering all the information required.
I have the ltr, and I had to show the last 3 years set of tax returns, proof of dividend receipt from the company I run. No bank statements required its just evidence of income. And they will also accept an accountants audit if you don't have tax return. It is an onerous process and took me 7 months to complete. It also helps if you currently own property in thailand as this is proof of investment. Hope this helps some of you.
I have the LTR also, if you qualify its easy enough, my wife has recived hers today. LTR is harder at the front end but you dont need to keep cash in any bank and prove you have it every 90days. And 1 year report what is there not to like about it! Works out the same money you would pay for an OA over 10 years but with a lot less hassle