DSI, Cris and playasap are not the same books and thus they do have different lines. They do, however have the same marketing department as far as I know and I believe that cris and playasap are cris guaranteed. It is not true that cris only take dimebets they take more online. Also, DSI does progressive reduced juice. DSI and Cris both have great software and are both respectable companies. I must say however, that they have really poor customer service, that is my main concern with the company. I have lost count of all the misunderstandings that has happened over livechat, and the times I was promised one thing, then when I came back a few hours later to get it, all of a sudden it was not possible anymore.
No big deal, though, if you sign up with DSI you will be safe, but I must strongly encourage you to keep a log of everything said in livechat and over phone, whom you spoke to when etc.
just my 3 cents, good luck