i would say build your own because its fun but it can definitely be frustrating calculating chainline and cutting forks for threadless and such and its more expensive. so if you have already had the fun of building a bike in the past its ok to skip that and go with a complete. though the kilo is pretty budget and i felt like it was kind of plastic feeling when i rode it. but maybe thats because just prior i had tested my other friends bareknuckle. check out IRO. they ride awesome and i like how you can still choose pretty much everything you want on the site. especially cog size i was super pumped on that option.