Most ponders I ever came across like improvising and doing the pond of their dreams in their own way, maybe for plants, for fish... They often end up a bit muddled at the planning stage, or breezing it if they do their research and finding out what is 'doable'
There are some excellent of sources where opinions and experience can be compared...
Visiting water garden nurseries, joining the awgs.org message board, message boards at yahoo and msn for koi and water gardening will quickly enlighten you on what the 'market' thinks about Aquascape, as against other choices
Don't forget, a great pond does not have to have a lot of mechanical gizmo's or be expensive to be quite spectacular... There are a lot of ponders out there who never went anywhere near 'proprietry' brands and created water gardens way out of that orbit, at a much better price
Me, I like tinkering with hardy and tropical waterlilies, I make ponds any size and shape I like, typically 50'x20' nowadays, I doubt any of them cost more than a $100 to do or a month to make (using Lowes 6mil liners lol), maybe one day I'll look at Aquascape bits and bobs when I get round to tinkering with koi a little more
That day could be a loooong way off