I'd get on the Dell because I know it would be much more tried and tested, what with it running an OS with several times the number of installed users.
Interesting. Your attitude surprises me for a 147 post Apple user - so I took a look at your posts - you don't have much good to say about Apple at all do you - and in fact I wonder if your one of those 'double agents' - posing as an Apple user but carefully spreading seeds of doubt and dissent..
Not that I actually believe that but your 'safety in numbers' argument has no basis in reality.
5 Years ago I would have agreed with you - having been a one time fan of Dell and an XP user to boot - having recommended Dell PC's and server to fortune 500 companies - but not anymore both companies MS and Dell are failing badly - Unix 64bit OSX running on exquisitely engineered Apple hardware is simply in a different league...
(Yes, I'm a serious Apple fanboi before you feel the need to mention it)