yay! it sounds like i don't know you and you read my blog!

Seba FR1's are a good skate, but for slalom not *the* best. they will do perfectly fine for slalom and they are also great for tooling around in a non-slalom capacity. it's the kind of skate you can beat on.
Seba high is basically the same idea but more precise. more responsive for slalom maneuvers. love this skate. i recommend the "deluxe" model because the frame is stronger/better than the regular one, but otherwise the same.
i never tried carbons but i heard they are the sh*t because they are like the highs, but way lighter.
i love my igors, but they are not for everybody. there is no liner so the skate is the boot, basically, but that also means that once it's worn out, there's no replacing the liner...it's just time for new skates. at the same time the skate is super-reactive. you can really feel a difference in wheeling tricks.
i tried the ksj skate once and it was really pretty and almost the same idea as the igor skate, but it's way more delicate, imo. i would ruin them quickly.
my igors are beat up already (less than a year old) but then again i do that with EVERY skate so i'm not surprised, nor do i fault the product.
i just skate really hard and fall a lot and try things i probably shouldn't.
isabelle, you did aggressive skating?

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did not know...