Who can recommend reliable couplers for HO trains? I have horn couplers, of course, but want something that will keep the cars hookedtogether through thick and thin. I don't do anything fancy so they never need to be uncoupled. I don't need the expensive Kadee magnetic kind or anything like that. I tried some accurail unit train couplers here tonight (recommended at a hobby shop) but unless your cars line up exactly right they don't work well either. It's so frustrating when the trains keep coming apart. I'm a novice at this so any advice will be appreciated.