請問水貨netbook係邊到買好???唔該各位c兄幫幫手^^

請問水貨netbook係邊到買好???唔該各位c兄幫幫手^^
Model: acer aspire one 521 / acer aspire one 721 / (有冇d咩好介紹???)
(買水貨既原因係因為果部機冇行貨)

買邊部好???邊部效能好d???