I started with heli's, but recently I bought a couple of planes. Yes planes are cheaper, but I think heli's are a lot more exciting, planes are fun too, I just prefer heli's. They are more difficult to build, set up & fly, plus the fear & excitement really give me a kick. Like the others said if you're thinking of maybe doing both, first get a sim, and purchase a good radio. IMO slow fliers are not boring and they are great to learn with
Joe