This is an excellent program that we use for our website hosting business, it has been very easy to set up & run in conjunction with all of my other software packages such as Hostgator (hosting), GoDaddy email services etc., I can't think about any downsides at this time but if you are looking into setting one thing then maybe make sure its your needs before going ahead! The best part was how fast everything went when doing setup/implementation within hours instead weeks or months like some others systems where there were issues finding out what works vs not working right away from day 1!! We also have had great support so far which makes me feel good overall.