Losi xcelorin vs Lrp vector

[gnr racer]

Hi, Im after some advice. I am looking to run an X6 indoor when its too wet for 1/8 rally x, and to hopefuly sharpen up my Nitro skills. I've been looking at different brushless motors, the Lrp vector x12 7.5 turn roughly £89.99, also the Losi xcelorin 7.5 again roughly £49.99. Is the Losi motor good quality etc and on a par with the Lrp? or am i missing something?? would i need to go down to 6.5 with the Losi to get same performance i would get from the Lrp 7.5??
any advice greatly apreciated.