some will say 'yes', reliable, others - like me - 'no, not reliable'. i don't know why, but i had severeal problems while others say they had 2 breakdowns in 6-8 weeks. but i'm the kind of person who does not even want those 2. there is so much going on on a tour that i don't want to be concerned if the kpa will be stable or not. it makes me uncomfortable and uneasy. if you want to go with kpa i'd get two of them and an a/b-box, so if one breaks down you can use the other instantly... since the reboot takes up to 1 minute (depending on your number of saved profiles).