Which one option should I choose?

I lost my HTC, about 6 months ago and right now I'm using this $20 phone from Telstra (like a brick NO TOUCH!). Anyway, I'm going to buy a new phone but I have two (2) choices.

Buy an iphone 4 or 4S.
Or buy an HTC and then the latest ipod touch.

Together they are both around $600. Which option should I go for? What's better?

I think HTC will be great for you reason behind that HTC provide you android OS which is very attractive features, apps and also has a good reputation in the market. If we talk about Iphone then it's also a good option but android provides you a simple UI (user interference) and easy to operate.