Hi mate
I have two of the strains mentined Gabys and SVR and we fly in one of the best sprint clubs in the country all races are from 90-139 miles and we also fly NFC, BICC and L&SECC club for water races. and i have to say our SVR are far faster in the out and out sprint races then the Gabys. however the Gabys beat the SVR once you get to 150 mile + (unless very easy day) so just depends on what sort of racing you are looking at mate.
cheers
John