World Mesh

Hi!
I'm wondering is there any major difference between 70m Global Terrain Mesh for The Whole World by Stephen Rothlisberger and FS Global 2008 which is payware? Ok, first is free I got that.
Which product do you recommend? (I don't care if it's payware, if there's a good product I have no problem paying for it)
I'm using FS2004.
Are there any major problems with one or the other concerning elevations?
I'm wondering is there any major difference between 70m Global Terrain Mesh for The Whole World by Stephen Rothlisberger and FS Global 2008 which is payware? Ok, first is free I got that.
Which product do you recommend? (I don't care if it's payware, if there's a good product I have no problem paying for it)
I'm using FS2004.
Are there any major problems with one or the other concerning elevations?