hi all! VERY new to biking, only did it recreationally as a kid/teen and i’ll be taking my mountain bike up to college with me and i want a secure lock. i saw the first one at my bike store, it’s $78. but when i went to walmart i see one almost the same for $35. does it really matter which one i get? i dont have an expensive bike by any means, but its bright teal and well taken care of. looks can deceive i guess lol thanks!