i bought the 310mm wilwood kit from rally design. the support and help on the phone was top notch. i was however going to buy the hispec ones, but one phone call to the company put me off as i got some grumpy old guy who was very dismissive.
the kit its self is great, and i dont understand the problem with the hoses that jimmy's having, they fit perfectly and didnt need much tightening at all and i have had no leaks so far.
as for squeeking, well a bit of copper grease on the back of the pad on installation and ive never had a peep from mine, also was in a situation the other night in which some very heavy braking was required and i was well chuffed with how they performed.
as soon as i get a track day in i'l be able to say how they perform in those conditions.
all in all, id say go for the wilwoods, as u will still have change left over to buy accessories like fluid and hoses etc. and i doubt u would be able to tell the difference between both sets.