Few questions answered will help get a good answer:
1)what kinda pipes are you runnin? thats gonna play a factor with any system that does vox (voice activated) transmit; loud pipes get picked up in the comm as if they were voice and transmit over the line...
If you're running loud pipes, make sure you use a system with push to talk, and if it has the ability to turn off vox, do so.
2)Do you intend to only ever communicate with your future wife? If you ever intend to talk to other bikes, you would do good to purchase cb units instead of FRS radios.
If you want to go the cb route, Sierra electronics sells a cobra unit that quite a few guys I ride with use; the link to the radio itself is here:
http://www.sierra-mc.com/proddetail.asp?prod=COB%2DRDTP ---they also sell the frs units
Keep in mind you will still need to buy a headset and ptt assembly; same website sells imc headsets with connections to their radios and ptt buttons for $60 :
http://www.sierra-mc.com/products.asp?cat=249
3)How much are you looking to spend? Also, are you sure you would never want the other features?
If you are sure you won't be doing more than radio, the above solution will work for you; if you intend to connect a music source, cell phone, or radar/nav unit as well, you'll have to get a little more complicated; sierra sells a imc headset that does all that by itself, so long as you'll never have a passenger on back you want to talk to...if you need passenger intercom, look toward the J&M, autocom, or starcom...I'd stay away from the chatterbox, and people have had mixed results with the blueant/scalarider headsets...
If I were you and had the cash to blow, I'd buy a unit that has all the extra connections, and add the other pieces as you find a need for them...but you do what you can, and sometimes you have to do it twice
