I'm also looking into a DNA 30 mod as well because I'm only just starting to get into rebuildables. The way I look at it (as with most decisions I make in regards to tech items) is I would rather go ahead and invest in a quality mod that I can grow into and can handle anything I want to do, making it something it something that is viable for longer. Sure I could get something that isn't as expensive in the moment, but if I out grow it and it ends up collecting dust on the shelf because I've had to upgrade anyways it seems like a bigger waste than just investing the money now.
I'm a computer gamer, the games have system requirements in order to make the game run smoothly. I saved for months to get a custom gaming rig, because I wanted to use the best quality components available. A lot of people said 'Why do that when something better will come along in a few months." True, but buying the best, it will hold up to game requirements much much longer than the cheaper low end components that are already obsolete.