I've heard ～そう
While みたい can convey info you have heard as well as what you see, ～そう is mainly used for info that originated elsewhere. - I heard...
1) simple verb + ~sou + desu/da
ゆきちゃんは 肉を 食べない そう だ。
yuki chan WA niku o tabenai sou DA
I heard Yuki doesn't eat meat.
2) -i adjective + ~sou + desu/DA
田中さんの新しいパソコンは とても 高い そう です。
tanaka san no atarashii pasokon wa totemo takai sou desu.
I heard Tanaka's new computer is very expensive. [This info could have come from Tanaka himself, or someone else]