We choose the Autosomal + 67 markers DNA test, https://www.familytreedna.com/products.aspx.
It is more expensive than the average DNA test. We did this so that we could join the Gilbert DNA Project. This project is being used to piece together the numerous Gilbert lines around the world, https://www.familytreedna.com/groups/gilbert/about. The DNA has showed us that we are direct descendents of the Josiah Gilbert who came to Ontario as a United Empire Loyalist. Lucky for me that Bob was able to understand the DNA results!
Our Gilbert line is from Thomas Gilbert of Braintree, Massachusetts, about 1640. The gravestone below is Josiah Gilbert, my 3x great-grandfather. This Josiah passed away in 1882 and is buried in Fredericton, New Brunswick.