I vote 732 hands down!
The 733 has numerous issues,as reported by owners here
What are the 733 issues?
JP
I only own the 733. I got it based off the review from the Amazing Ribs site. I have had no issues with getting the two pieces to sync and have not dropped connection when using it.
http://amazingribs.com/BBQ_buyers_guide/thermometer_buying_guide.html