Touch Diamond Or Touch Pro

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Hi guys i have had my touch diamond for around 3 weeks now..i must first say i love this phone..but i have the choice of keeping it or buying the pro for 50 $ more (i paid 250$ for my diamond by mistake so i can take the 100 back if i decide to keep).

So i maninly use my phone for internet music apps, msn, and sms im on telus.

Which should i get?
any input would me much appreciated Thanks Geeks

Ps i can also get the storm..lol