Suggestions on a new Ext. HDD!

I'm looking to buy a ext. hdd. 160 - 250 gb, for backup only. Pricing around 100$ - 150$. It will be used on two laptops - acer 1642 (1 year old) and toshiba A 200 (brand new). I've read the user comments for WD, Seagate, Maxtor, Lacie and, to be honest, I'm terrified. Is there any other manifacturer that you could suggest, regarding the parameters mentioned above? What do you think of prestigio? I didn't find a bad review for them 'till present. Many thanks for your thoghts. :wave: