Only board that catches waves like a longboard is........a longboard. Believe me when I say this since I'm standing and on the wave when I'm calling off still prone Hypto Krypto paddlers......
BTW I'm with DTC on the mini mal tip....that's the way to go to get some surfing skills.....until you do that a board's "sensitivity" will be a minus not a plus since that is just another way to describe less stable.
I'd forget about that few years idea for a single board if you're going out 2-3 times a week. If you're young you'll fill out and get bigger and need something different.....if you're fully grown you'll improve and want something different.....or you'll just want something different along with what you have already. My advice is to buy for now.....not something that will "grow with you" or that you'll grow into. Buy something you can use right now and then if you tire of it, outgrow it, snap it, wear it out you can get something different.
Buying used makes this process relatively inexpensive since you can often sell a board on for nearly (or exactly or sometimes a bit more) than what you paid originally.
At least that is what I tell my wife....

....it is true actually but the issue seems to be that I buy more than I sell.
