32GB or 64GB iPhone 5S?

I have had a 16 GB iPhone 4S since Feb. 2012, and apparently 16 GB is NOT enough for me at all. I am always looking to delete stuff to make more space available and it is hard because I use most apps on my phone. I only have like 50 apps and 200 pics. I delete messages and emails and notes and stuff to clear up cached data and stuff, but I always have only 1 GB free on my phone and it makes it slow and laggy. Plus I cannot download any high graphics games that are generally over 1 GB.

I am thinking of getting an iPhone 5S in Feb. 2014 as an upgrade, but not sure which storage option to get. 32 or 64.

What do you think is the best for just apps and pics, and music. NO HD movies.

Thanks