In adding to my 3DS, I've got an iPad and iPhone 4S. What I've noticed is that I occassionally get excited by DS and 3DS hand-me-downs. On the flipside is that some of them are fantastic ports, and some of them are really bad.
Having a full-time job makes it pretty trivial to even try out the more expensive Square ports, but I assume a few people might be on the fence because even high end studios (See: Square 'n Capcom) have put out some stinkers (See: Chrono Trigger and Mega Man X) among some fantastic ports (Final Fantasy Tactics, Ghost Trick) and some YMMV releases (TheatRhythm, Phoenix Wright 123 HD).
Anyone want a breakdown of some titles? Do we already have a section for this?