Seeburguer Vs 3rd party vendors

Hi,

we are in the process of implementing some EDI message conversions within XI, we have test some sample prototypes wrting a adapter module integrating with Stylus Studio to do some XML to X12 and vice versa convertions. Initially we don't for our implementaion we don't have too many message types we are thinking of doing 3 or 4 message conversions within EDI. (like 888,856, etc). Having said that do you guy's suggesst to use Seeburger or to go with the custom adapter module using Stylus Studio convertes. I'm not sure about the licensing cost of Seeburger when it compared with Stylus Studio. Could some one give some pro and cons compared with Seeburguer and 3rd party vendors in terms of pricing and long term strategy

Thanks,

Joe.P