I work for SensoMotoric Instruments. If your eyelink system is the original eyelink, it is probably from us. We make video based systems just like the ones you are used to from ISCAN and EyeLink. I dont know the Fourward system, could you tell me a little about it?
We have one system that is used extensively for psycholinguistics, its our high speed eye tracker (the Hi-Speed)... also the fastest shift compensating video based dark pupil system at 350Hz (thats pupil - CR tracking, also known to the academic literature readers as the 1st purkinje image I believe). We hope to have 1kHz eye trackers our for reading/psycholinguistics by the middle of next year. There is a rush to get that speed because, if you didnt already knopw, Skalar will discontinue production of scleral search coils soon, meaning that video based eyetrackers will be (in most cases) the only choice. I think video systems are better for your type of work anyway, those coils are annoying for subjects.
Check out our website
www.smiusa.com, or drop me an email if you'd like to learn more (
[email protected]). Where are/were you located? Specifically what kind of experiments do you run?