Joe,
There are several providers of English language channels available. The best choice depends on what of programs you want to watch and how much you want to spend.
If you are just going to add a second LNB to get Astra then go with a Aston Seca (Mediaguard) CAM. This plus Hotbird will get you many PPV movie channels with English on the second audio track (Taquilla, Palco, and some movies on Kiosk). There are some good Dutch channels with seires such as Home Improvment, Friends, etc. If you have kids, there are several channels for them with most shows available in English.
I have found that the Seca CAM gives me access to most of the English langauge channels on Astra and Hotbird. The only other English langauge channels of interest that are on Astra/Hotbird exclussively in Irdeo encryption are Greek based. My Irdeto CAM is gathering dust.
I would not recommend the Viaccess encrypted channels on Hotbird for English. Most Viaccess channels are in French and they do not broadcast the English audio track. However, if you have a motor, then there are some excellent English langauge channels on Sirus at 5E in Viaccess. We have found these to have the best series.
To sum it up, if you just have Astra and Hotbird, then the Seca/Mediaguard is the best choice. Only if you have a motor, then add a Viaccess CAM.
This is just my opinion, but I hope it helps.
Mike