I am looking to buy a sonar tape measure to measure my house. I have
three in mind:

1.)Craftsman Laser Guided Measuring Tool - Mfr. model #LM04CN
2.)Black & Decker Sonic Measurer - BDSM100
3.)Ryobi Measure Tech Plus Stud Sensor & Sonic Tape Measure - Model
EMTP006


Does anybody have any knowlege of any of these? Are any of them good?
Thanks