Opinions on these vittoria latex tubes?

anyone have experience with these vittoria latex tubes? historically, i’ve heard mixed reviews about vittoria latex but are these a new version? they have removable cores.

i’m considering using them at ironman canada. if i do a test ride or two this week, good idea or bad idea (nothing new on race day)?

http://i1034.photobucket.com/albums/a423/415brian/vittoria.jpg

I use them…haven’t had any problems out of the ordinary.

Hi,

I’ve been using them this year with no problems
.

I put a set in my Michelin PR3’s in April for a race. Too lazy to take change them out after. Picked up a nasty piece of wire through the rear that would have popped anything, so put in a butyl. The front is working great! Probably 300 miles on it without any issues.

Used them for an olympic this year with no problem. Plan to use them for IM next year, though they lose about 2 psi/hour so I’m not sure how I’m going to manage that…