Go the root canal route! Yes, it's more expensive but you want to do anything you can to save your own tooth. Once it's gone.....it's gone and costly down the road for implants.
I have had four root canals done and will probably be facing a fifth soon. They truly are not bad at all. It's nothing worse than having a cavity filled. They numb you and then it takes about 20/30 min or so. Then you have your tooth and just get a crown put on it. Technology has improved so much now that they've made it faster and virtually painless.
I'm just giving my advice because about 15 years ago, I went the cheap route and had two teeth pulled instead of root canaled. Now that I'm older, I'm uncomfortable about how it might look if I smile too big AND I've noticed that my teeth are starting to move because of that empty space.
Give it a lot of thought. If money is not an issue, keep your tooth.
Let us know how your appt goes. I'm glad you're feeling some relief from the pain.