Since you're going to link them from the pages, I think people are a little gun shy!
I've seen at least three and the general synopsis is:
1) first Rio video - somewhat inspiring but useless for learning
- highlights
Let me get back to you on that one
- lowlights
More of a friend to friend talk than instruction
- only slightly improved my casting due to visual queues
- target skill level: beginner, but not in a useful way
- rating (1-10): 5
2) Simon's video - quite instructional and useful for learning
- highlights
Excellent progression from basic rules to advanced casts
Camera angles were excellent showing full casts after
explanations
Covered a broad range of casts
Coverage of different styles including underhand and
single hand was cool
- lowlights
A bit brief with each cast, perhaps the time for underhand
and single hand could have been used to provide more
detail in core spey technique "nuances"
- improved my casting specifically by using vcr slow-down to
view frame by frame on the well-filmed casting sequences
- target skill level: beginner but with value to all viewers
- rating: 8 (there is no 10)
3) Derek Brown video -
- highlights
Introduced a number of important concepts throughout
E.g: his initial swing exercise is very useful for use as a
teaching tool for beginners
I liked the progression thru topics he used
- lowlights
Did not include newer casts from the pacific northwest
Could have applied the initial concepts throughout more
- improved my casting by introduction of foundation concepts
I saw this at an early stage in my learning curve
- target skill level: beginner but with value to all
- rating: 8
Of course this is all subjective - if I saw the same video at different stages of my learning curve I would respond differently, etc.
Anyway, not sure if that's speypage link material but FWIW!