We purchased this for the front of our Townhouse.  We found with research that the "Solar on Demand" seemed to be the best option for a Solar Birdbath/fountain.  This one has been such a joy so far!  Easy to assemble and has run beautifully!  The sound and site of water has been such an added pleasure and enhancement to the "curb appeal" of our home.  We are really enjoying this fountain/birdbath and so are the birds!