After racing touring car Nats id be more inclined to save up and buy one of the 'quiet' genny's.
Ive had 3 of the cheap £60 gennys, bought from Argos and Screw-Fix and all 3 died. They all died around the same time as many of my TC friends who also had bought these for the TC Nats.
If you are in this game for the long haul id save up and spend your money on something good, silent that will last
