BESTEK 4 iphone FM transmitter car ipod car FM transmitter mp3 player wireless FM transmitter usb with remote control SD / MMC card slot + USB stick + Audio input jack, mp3 FM transmitter car kit for iphone 4,3gs&3g,ipod touch.Nano,Classic S650
There are always features that could be added or wished for in any product, but I found this product well worth the little it cost and perfectly suited to its intended purpose.  Noise very negligible if detectable at all.  Having experience with transmitters in the past, I am well aware that poor performance is often the fault of the car stereo system, not the transmitter.  I think this could be the issue with people having noise problems with these units.