54M is relative easier to drop data and needs retry. Some technology like MIMO or dual band tries to maximize the success rate.
It's not about the brand you choose, it's because the wireless technology. Find a "more modern" wireless router (with more than one antenna, better support dual band) will solve the problem.
Please be reminded that dual band support is required for both side (both sender and receiver devices)
i see, the problem is from the router; So, how is the performance of Apple Airport Extreme? i mean stable enough for data transfer of a 44k song? longs like Airport Express have the same function, right?