I like that it's easy to use, simple in design with no frills - just get down into business! It is also very affordable for small businesses as you can try this service without going over $10 per month or so.
Nothing but positive things about office sense from my side of experience using them since they have been around for years now (about 8-9). The support team has always helped me out when ever needed something changed/fixed by mistake etc.. Never had any issues during those months spent testing their product before deciding whether i should buy / continue paying monthly subscription fees for an online live call answering system solution.