I looked into the mini about 3 weeks ago, but I decided it wasn't exactly what I needed. You have to look at what you will be using your computer for. The mini has limited memory and disk space. Even with the customization features you are not able to have more than 1gb of memory...and that means your computer won't be able to run some applications, or will be slow in doing so. Again that depends on you and what your usage will be like.
I run photoshop, illustrator, dreamweaver etc... on mine so 1GB for a computer is really slow. Also the mini, is actually mini, lol so it has a small screen, small buttons etc. Its a relatively new computer so it might not have all its kinks worked out yet.
With that said I've had both dell and mac laptops in the past. 2 mac notebooks and 4 dell notebooks, and I love the dell computers. I've never had problems with them, and there is 24hr support that comes with it, so its useful incase something ever needs to be done.
I just ordered my new laptop last week actually (with a pink cover because I am a nerd and i don't want the FI using it) hehe! I think its supposed to be delivered today. I will let you know how it runs in a few days if you want to wait that long, and then give you the exact name of it and specs.