Hi,
I've got the 350D in the Ikelite hosuing and love it but I'll admit I'm biased.
I'll only comment with respect to Ikelite
Plus -
- Biggest plus is eTTL circutry so that the camera will give correct exposure data to the external strobe. (Also with plus and minus compensation on "ideal".) Good if you are lazy, however if you already have expeince of manual strobe control may think you don't need it (or realise how usefull eTTL is
).
- Price
- Range of housing and support.
Minus -
Depth rating is on 60M. Whilst you might feel you'll not be doing complex photography at depth yet the deep side will beckon soon enough.
In your initial post you also mentioned the 6.5 frames per second any external strobe will not be able to keep up with this rate. The eTTL exposure control actually errors (over exposes) if there is not enought time between shots.
I Don't have S&S so can't comment on what they can offier but know they are well loved housings as well.
Cheers,
Richard B.