Thanks for the replies so far guys, much appreciated
@SilverWarrior: For your information, DP does stand for Density-independent pixel (dp) with Android, but you are right in that DPI stands for Dots Per Inch.
In Subject 33 we can't use vector graphics as all the in-game graphics are currently retro pixel style images, so we have to stick with textures at this time unless we want to do a total redesign.

It looks like some rethinking might be in order on our parts LOL

Feel free to toss any more tips/pointers our way