I have only had this product for a week now and as far as I can see it's a great product,  I live in a very high windy area of San Marcos, Ca, so I need something that won't tip over and this concrete base seems to be very sturdy and heavy and it was easy to assemble.  I may buy another one.  A good price too, compared to Costco and Home Depot.  I don't even think Home Depot had a 70 lb base at the store or On-line.