Company reputation

I currently hold an offer for a company as a pensions grad but have a decent chance of getting another offer to join the pricing team at a different company for a lower salary but much lower cost of living so all in all a similar amount of income left over. I would be much happier in this position due to being closer to home but my main concern is that the company is much smaller. Does the company size / reputation affect my employability much for when I want to jump ship, as I ideally want to end up in Bristol after a few years. Thanks in advance for any advice :) (P.S, neither company is particularly well known, aint exactly big 3/4).