hmm, so let me get this straight:
you have a
Macbook Pro 13" 2010,
iPad 1, and
Samsung Intensity.
ok . now to be quite frank, what i would suggest you to do, is
Save the Money!
You honestly do not need any of those things, well the iPhone [as that phone you have is Crappy

] is rather tempting, but honestly, no i wouldn't go for the iPhone either.
Of course, it is understandable that these are all
wants and not
needs...i was in the same boat a couple of months ago

, after Apple released the iPad2, the iPad 1's were on extreme discounts so i was quite tempted to buy one. In the end, I got into a little argument with my dad, and in the end I decided not to buy it. Today, im actually happy i saved those $400...
But as a dedicated MacRumors member, I shall help you out in the decision making process

Im inclined towards the iPhone, just because it does everything you possibly need to do [with your existing tech].
1. it gets rid of that crappy thing you call a phone

2. you get internet, apps, etc.
3. it's an iPhone, everyone loves an iPhone
of course this is assuming you have that data plan and your parents pay for the phone's monthly charges.
the iPad 2 is quite nice, but i really dont see it's use when you have an iPad 1 with you. Im assuming though, that if you were to get the iPad 2, you would sell or give your no.1 away.. despite that, i would not go for the iPad 2 just because i cannot see the use for it

The mac mini does seem nice, but with a MBP, you honestly do not need it..
Now to repeat myself once and for all

Don't go about buying and satisfying your
wants, who knows when your
needs will start to kick in
Hope I help,
Shyam09