Next step up from Seagull guitar?

I have been playing the guitar for 3 years so I would consider myself as an intermediate, i've had my Seagull s6 for about 2 years now.. I know it's a really good guitar and is comparable to some Martins, I can't help but want another one. My philosophy with music is that you can never have enough LOL... but unfortunately I'm a 16 year old girl who doesn't have a job (besides occasional baby sitting, but what does that give you?) Anyways, I plan on getting many guitars in my lifetime.. but for now if i wanted to get a step up from a seagull s6 that is not ridiculously expensive ... (any thing more than around 1000) what would you suggest? Thank You!