It varies a helluva lot with Acer, over the years. I know, some of them are as reliable as the weather forecast, and some of them will trundle along quite happily for 5+ years.
If you happen to get one of their "crap" line laptops, they have great customer service overall. And generally have some of the best build quality over a lot of the competitors.
Which computer you looking at by them, maybe we can give some input on it?
I hated my Acer laptop. I returned it immediately after it arrived. Felt flimsy and was slow right out of the box. I personally avoid Acer like the plague.