Hello Don,
I use Paul Stametes product called Mycogrow and I also use Plant Success. I met Paul Stametes in person at my previous company and he has a long history with fungi and is a very nice person. Due to a nondisclosure agreement I signed, I can't give much information about the product.
If you search online, there are pictures comparing growth rates, showing growth of both foliage and roots of plants inoculated and those that were not treated. Some of the comparisons for certain products can be deceptive because some in inoculants, like some of the products I use, have fertilizers incorporated into them, not that it's a bad thing.
The research out there shows that inoculants work for some plant species and not for others. Instead of looking for a product, hoping that one of the organisms will form a symbiotic relationship with your plants roots, it may be more beneficial to find a healthy, Lychee tree for example, and dig up some of the soil from under the drip line and using that to inoculate your trees.
Simon