Even the low cost recumbent tricycles represent a significant investment for most people. You don't want to make a purchasing mistake.
I recommend devoting a day to visiting a recumbent specialty dealer in the middle of the week. First of all, there are several variations on the recumbent trike design and they all ride and handle a little bit differently. Just the act of sitting down and getting up from one can be an issue for some people on some trikes. There are other issues involved with recumbent trike ownership, like transportation and storage, that you may not have considered. For example, how wide is your doorway? A recumbent specialty dealer will have experience with such issues and will be much better able to discuss them than somebody who has two trikes on their sales floor.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.