I have had 2 Dells for work and home and they have, eventually, both developed hard disk or keyboard problems. However, one of them, the Inspiron 8500 I bought from Dell Outlet (ie pre-owned) in 2004 for £850, then used for music studio use then for work for a year, earning me about £25,000, I sold for £70 last week to a second hand computer shop. Not bad. Only had to replace the hard drive once.
Also had two Vaio's. One for music studio and gigging use and one for work. Both faultless. Both lovely to use. Both still in daily use, one by me at work and one by my ex's mother.
I now use a Macbook Pro for personal and music gigging and it's lovely to use. No problems so far. Really enjoying it.
The Lenovo's also have a great rep and if I had been able to find one at a reasonable price to lease here in Edinburgh for work, I would have done so. Went Vaio instead. It's been fine.