The old-fashioned EV trainer requires a lot of time and motivation, which I, unfortunately, simply don't have. :( If you have a lot of knowledge on EV training, then you may find it to be easier to raise your effort values this way, but as for me, I'm not very knowledgeable on it. Personally, I really like the newer method—super training. Super training is much more convenient, since all of you have to do in it is play mini-games. The games take only two - three minutes to play (some take even less), and once you're done, your effort values would be raised in an instant. If they had introduced us to this feature sooner (perhaps in gen. five, or maybe even four), then it would've been a lot better. xD