Ask for advice: which is better, Giant 770 or Duke 500,600? Travel by bike occasionally. Thank you! Urgent! 100 points! ! ! !

V-brakes should be enough. 770, travel is absolutely enough, high-grade V brakes are definitely better than ordinary disc brakes and cheaper. Although Gong 5 is also a V-brake, riding is definitely not as good as Giant. However, if the landlord likes disc brakes, it is recommended to buy 770-D. Although it is M4 16A made of Chinese materials, it is the same grade as bb5 of Gong6, which is only a few tens of yuan cheaper. These two models are definitely worth starting with, and Giant is a specialty store, so the maintenance and after-sales should be better.