Gene,
Tactic radios are sold by Futaba/Hobbico. They are an entry level of radio that they are offering on the market. They work really well and I would trust them just the same as I would trust a Futaba radio.
4-channel
http://www3.towerhobbies.com/cgi-bin...XYWM9&P=ML
6-channel
http://www3.towerhobbies.com/cgi-bin...XARNY&P=ML
To answer the original question. With the plane in the air, and no obstructions, the range of most major name brand radios is about 1 to 1-1/2 miles. Like it was said above, you can control the plane farther than you can see it!!!! Trust me, most planes at a mile away are going to be a speck, if you can even see it any longer!!!
I wouldn't worry about your range.
Ken