Holly's has been my favorite nursery for many years because of its close proximity to my home, but also because of several other factors. The owners are local, they are familiar with our local zone limitations, and our local weather problems. They sell with a guarantee, they deliver, and they will also stop by to check an ailing plant if you find you have a problem. They don't always have a wide array of exotic plants, what they do have to offer are always those that are tried and true for the area.
I use them for all my gardening needs and problems.