If you don't want to pop for the V1 an option would be one of Beltronics models, either an RX 65 from a specialty store or the general market 995 which are significantly less expensive but still should do the job, just without the arrows. Finally, if you're really on a budget a Bel 795 can be had for as little as around $50 and has had good reviews. In fact, I have one as a backup in case my primary fails.