Another view for you to consider. The HP-1 does give you the opportunity to custom enter your own data, it is not limited to 'pre-loaded' frequenices at all. First of all, as several have observed the data about trunking control channels, etc, is mostly all in rr.com database. Uniden has a financial agreement with rr.com to update their own 'mirror', tailored to the HP-1, once a weekk, every week and make that available to all HP-1 owners for a free download. So, the HP-1 can have the data upated pretty much all-the-time if you want. I don't ponally bother to do that every week because I am primarily intertested in my own city/county and I would already know of a Major change.
Another myth often told about HP-1 is that you can't enter a frequency. Not true, of course you can.
Another old wives tale is that the learning curve of the GRE-type programming is easy...only if you are already attuned...the modern Unidens use DMA (not fixed banks, they haven't used fixed banks in a number of years).
Study the wiki for a discusison of the two basic types of scanning....dynamic memory allocation (Uniden) or 'objects/scan lists' (GRE) they are conceptually somewhat different. Each has advantages and disadvantages. Each has proponents. You have mostly heard on this thread from GRE fans. I am NOT one of those.
The idea expressed from one person that the HP-1 is very overpriced is completly unsupprted with facts and data.
At the moment I do not own any curent GRE scanners, but I had a GRE 500 that I sold in 2011 beause I prefer the Uniden DMA. I own a BCD996XT, 996T( in my vehicle), an HP-1 in my office, another HP-1 at my bedside, a 785D near my easy chair. A BC780XLT on permanent loan to a friend for his use, an old RS2006 with Opto mod for research and a few small odds and ends.
I am not rich but I am what is called 'comfortable', in other words, within reason, I can own any piece of radio listening gear I want, I am not associated with any manufacturer, dealer or distributor.
I only buy want I want. It is my opinion that the HP-1 is the best consumer-grade scanner on the market today.
LEP