Something get and something lose and you get what you pay for.Ther particular advantage of exmasters.com is the adult content which is allowed and which will attract more customers to your service, as a reseller from them. But having no account, you will have to buy and install everything needed (WHM, billing, etc.) yourself -and this is not very convenient and more timetaking!
which adult sector you target. Be careful with the spamming and the excessive bandwidth use.
I see no difference. The only difference is bandwidth should be. Adult web sites have lots of bandwidth inside.