well a better board will make a huge difference, this is especially true if you ride the park a lot. Some factors that do affect the ride is flex, weight, edge material, and the general shape of the board. First the flex plays a big role if you do a of butters or technical rail riding. Weight can play a big role for everything, like ollieing , spins, flips, etc... Edge material can also play a big role, because the new boards with the slime walls are virtually impossible to catch your edge on a rail because of the materials used. And finally the shape of the board, if your just rec riding than a directional board is fine, but for park riding a twin tip is very useful cause if your riding switched it will ride the same.
Hopefully I have enlighted you on the subject and changed your opinion that better boards do make a difference. BUT!!! if your just recreational riding it really doesnt matter, so if your not planning on any spins, flips, or technical rails any board should be fine