First thing you must know that experience with any specific brand differs from user to user. So its irrational to make views about a brand from a small bunch of experiences, either bad or good.
Above all, Acer is
not so good, not so bad company making cheap laptops (money wise). Though, build quality (along with quality hardware) is a segment where Acer seriously needs to give attention. But their low end segment is pretty good. I have personally used one.
Lastly for these types of queries, we have All laptop related queries here!!!. If you have any speific type of query, you're recommended to post it by creating a thread as you did
along with filling Laptop questionnaire.
I hope this helps.
PS: Please mention what config are you getting in 3830tg as I can see different configs floating around.