I like that it is easy to use, has all of our needs in one place (i think?), works well with other products we have purchased from them as part time jobs for us! nothing really- i guess maybe some minor issues but not anything major or noticeable at this point? We are using surge curve mainly because its easier than creating everything ourselves so far!! It does what you need without having too many bells/whistles around which can be overwhelming when trying something new especially if your business isn't very tech savvy yet - they do help walk people thru things step by steppewhen neededwhich was nice since my husband wasn’t familiar wih computers etc either before working here.