If your basement already has a sump pit, the pump in it is doing most of the work, and pumps wear out. Signs it's time: the pump runs constantly, cycles on and off every few seconds, makes grinding noises, or the pit fills higher than it used to during storms. A failing pump is cheap to replace compared with the cost of a flooded finished basement.
The company you're connected with can size a new pump to how much water your pit actually takes in, add a check valve so water doesn't drain back, and fit a battery backup that keeps pumping during a power cut. Many Lehigh Valley homeowners also add a high-water alarm, which sounds before water reaches the floor. If your discharge line freezes or dumps water right next to the foundation, ask about rerouting it at the same visit.