If your only car to car or maybe just for vactioning or this hobby really isn't a hobby at all for you ? The Lil Wil would be OK. If you plan on making this a hobby and you plan on being around for a while ? Don't waste your money on a Lil Wil , spend a few more dollars on the 1000 or 5000 antenna.
They are just all around better with performance. 90% of your whole system is about antenna , it's one area you wouldn't want to skimp on if you didn't have to. As far as the 1000 and 5000 are concerned , if you don't plan on running any big power over 500 watts or so , you can just go with the 1000 , if you plan on being the talk of the town and running over that ? go with the 5000.
They are both good TX/RXing antenna's and I personally only find the power capability is the olny differance between the two antenna's (my experiance), but both are much better then the Lil Wil .