then i would stay away from the tracker models since you will be at the truck most of the time they are just handy because you can carry them on your belt.
.
LL tracking, is have a summer sale right now on all there tracking equipment and for the price their unit's they are great(i have one but cant remember the model number) i just bought a tracking collar there that last 16,000 for a hundred bucks.

wildlife has always been one of the number one companys also and i love mine. i use it the most(it is the trx10 model) which would be the only other company i would be looking at if it were me.

here is a recent poll i found on tracking collars. take a look
http://www.coondawgs.com/forum/viewtopic.php?t=1101&highlight=tracker

if you go
ukcdogs.com
and coondawgs.com and go to there message boards . they have tons more info on any thing you want to know about hounds.
i hope this stuff helps. good luck and let me know what you decide and how you like it..
ps. next time your out grab a camra and take some pics. i like to see other peoples dogs on tree.
http://s134.photobucket.com/albums/q105/coonsmen/. there are some of mine.
take care
Jeff S.