Personally, I've had bad experiences with them.
The first one that was bought, never turned on to begin with(after being delivered late to boot). Apparently the Motherboard was fried, so after waiting another week for a repair person to come, they put it in, and off we went. a couple weeks in the computer started running slow, so we called dell, at which point they told us to buy more ram, told us the exact one to buy, and we did. Well, It A)wouldn't fit, and B) The Dell person we talked to, gave us horribly wrong info. We need to buy ram "Special" from Dell, for an out rageous cost. And the Computer NEVER worked properly.
The second time my parents bought a Dell, was a Dell Cash Register for their store. This too, was late on delivery, by a MONTH. They paid in upwards of $4000 for a top of the line Register, and was sent a less then satisfactory one.(the one sent only cost $2000). after battling with them for months over the price, we finally got the money owed to us back. While this was happening the register sat, because The Scanner wouldn't work, and the computer wouldn't start. after waiting literally a YEAR for it to work, someone came, and fixed it. The scanner still dosn't work, the mother board fried on it AGAIN, AND the program is defective, so GST adds on twice, or is too much, or the total is off. Absolute crap.
Around my city, everyone uses Dells in their stores... And i've asked every person i saw, what they thought. EVERY SINGLE PERSON said they didn't like it, ran into problems, and it was a HUGE hassle for everything.
The upside, is the cost... Its all noname brand components so its like 2 cents for a desktop, lol.
maybe its just where im from, but i got screwed everytime with dells.
The only Manufacturer computers i like is Gateway. Never had a problem i couldn't fix with my laptop(worse thing was my wireless stopped working for about 15 mins, then realized i was out of range).
Just my story, and Two Cents
Hope you make a right choice, and goodluck!