IKEA bed frame and sprung slats

Hi,
I am looking for a double-sized bed (mattress + base/frame) to furnish the new home I am moving into. Mainly for cost reasons, it looks like a pocket sprung mattress is the way I'm going to go, many thanks for the advice given when I phoned in.

For the bed base/frame, I am looking at, among others, the options IKEA offers. IKEA offers 3 kinds of slats with their beds, all are sprung slats and going up in cost appears to get more slats spaced more closely together, based on the advertised count of slats they all have a spacing of less than 7.5cm.

What are your thoughts on IKEA's bed frame and the sprung slats that they offer? Would the denser slats mitigate the issues your article wrote about with sprung slats? How does that setup compare with using a platform or divan base?
Thanks!