I like how easy it was when making changes, you don't have too many options or steps involved before saving your data - just click save! The software doesn’t show errors very well but if there's something wrong with what looks correct in terms of pricing/costs-it will be highlighted as an error under "data" section within our account page (website).
We use this mostly because we are not able find other companies willing offer similar services at such low prices compared even against some international carriers who charge much more than us here locally.