I assume by "full-solid" you mean solid top, not solid back and sides? I don't think those Chinese guitars have solid back and sides, they are usually laminates.
I found that some well-made laminate guitars (like Takamine C128) sound much better compared to many low-grade full-solid guitars. I think that's because laminates have relatively thin soundboards. Of course full-solid well-hand-made guitars usually sound better than laminates, but poorly made full-solids are often overbuilt with thick soundboards and sound much worse.
If you want a full-solid guitar for a cheaper price then try some vintage Japanese ones. There is a thread here about them
You can get Matsuoka for around $500-1000, they are usually not superb but pretty good. Hiroshi Tamura guitars usually sound better but more expensive, typically around $1000-1500, but there is one for $500 on e b a y right now which is a bargain. Both are luthier-made and usually signed. Takamine C132 are solid-top, quite good and cost around $500 but they are factory made. And of course tons of other labels like Yamahas, Arais etc.