As you can see I am totally new here. 
I am looking to epoxy our garage floor 700sq ft. but I REALLY only want to do it one time, not looking to repeat this process some 3, 5 10 years down the road.
Is there a product that can and will last the test to time for a normal residential garage? 
Thanks in advance.
This is one of the questions that comes up again and again. There are a lot of great products on the market but keep in mind that the product is only half the battle. Most epoxy failures in DIY installations, IMHO, are due to concrete conditions, installation issues and really really poor expectations and directions on the part of the manufacturers and distributors.
The big key is doing the prep correctly. Rent a grinder, take your time and do it right. You can try acid etching and will know pretty quick if it is profiling the floor.
Do a moisture test and spend the extra money for the primer. Make sure you use a top coat, and make sure your base coat is 100% solids epoxy. Everyone has their own opinions on what is best. Obviously I love the products we sell and believe they perform very well. If I was not in this business I would buy from Scotty at Legacy Industrial.
I am not a fan of buying from the paint stores or home centers. First often they do not know what they are doing when it comes to residential garage floor epoxy. Second some of their product is good and some of it .....
Lastly, if you can afford it, go with a full broadcast system.