those plastic signals are shit, they're dim as all hell so you might as well go with no signals, no shop with a conscience would pass inspection with signals that small and dim, the ones from dcc above I don't know anything about, so I won't fathom a guess, the ones I personally use on all my builds are the more rectangular ones that come in brushed aluminum, you can get them in either single or dual filament, they're pretty tough, and usually retail for about $30