I love my iPad and my Mac, and wouldn't have it any other way, but if you had to choose only one and were on e fence between an iPad or a Mac, I'd suggest getting a MacBook air.
The 11.6 is only a few ounces more than an iPad, only slightly more expensive than the 64GB iPad, and slightly wider, but has the same full computing capabilities of the MacBook Pro, unless of course there are specific features of the Pro that you must have.. in which case, you should get the mb pro. If budget allows, get a Mac and an iPad