Macbook vs. iMac

[zakirahzakaria]

I'm highly considering to get myself a new scrapping machine since my 6-year-old Macbook is now super duper slow with PS CS5.

For iMac owners, how long have you had it and has it ever needed any kind of maintenance since purchase? What I mean is, did you add more RAM after 3+ years down the road to speed the machine up, or upgraded a hardware inside it... things like that?

I asked this coz my Macbook's battery had to be replaced after 3-4 years since purchase, RAM & HDD upgraded after the same period...it's a great machine but I'm wondering if iMac requires less maintenance?