I like both of them, but being me I would go for the cheaper one…:rofl
The 675 is an amazing bike, my buddy has an 07 and I love riding it for the money hands down best bike on the market, you’ll pay more for a Gsxr 600 and not get all the extras the 675 comes with like stainless steal lines ohlins rear shock and dampener and other addons that you would normally upgrade on a Gsxr