I found a good user feedback from GPSpassion.com forum by paulkbiba. I think this should help decide between the regular version or Precision Plus.
http://www.gpspassion.com/forumsen/t...66&whichpage=5
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Just back from an 800 mile (round trip) drive from NJ to Buffalo. I used Routis and my new Holux CF Ultra. The following are my observations:
Routis:
The software performed perfectly. I have done this drive many times, as my daughter was in college in Buffalo (and this was her graduation), so I am familiar with the route. Routis routed me exactly as I have come to drive. The ETA was "dead-on" accurate. I know driving times from all points on this route and Routis was correct for all of them. It is clear that Routis uses a combination of calculated time and averaged time as it changes in real time as you speed up and slow down. When I was caught in thundersorms and slowed from 75 to 50, Routis would change the ETA. Clearly this was averaged, because the ETA would take 5 or 6 minutes to change.
Of the software I have used, Routis is the most sophisticated in giving directions. It uses such terms as "turn right" , "Bear right", and "Stay right" correctly. The voice prompt is very clear and easy to interpret. One annoying factor is that the voice sort of "explodes" with a plowsive before each sentance. Another good point is that it is the only software I know (Pharos, Mapoplis, PocketMap) that gives you a series of directions all at the same time - see below.
On the other hand, while you can use POIs as a destination in a route, Routis, unless I am missing something, does not display them on the map. This means you can't display rest areas or gas stations, which Mapopolis and PocketMap do so well. Also, the display is a bit "thin". It doesn't give you city names (like Mapopolis) or areas of water, parks, etc.
Despite this, in my experience Routis is the most stable and reliable software I have seen to date.
Holux Ultra
I have done this route many times and when I go across the NY mountains and valleys around Cortland (about a 50 mile stretch) every unit I have used (Pharos, Magellan Meridian, Garmin, Holux Regular)has gotten an intermittent lock in good weather, and no lock in bad weather. Coming home, I was in a continual series of thunderstorms and downpours. The Holux Ultra registered lock on 9 of 9 satellites. This is an incredible performance. For the more experienced of us, imagine sitting in a thunderstorm, and the bottom of a valley, and getting 9 of 9. This was really exciting.
The downside is that the Ultra seems, and many people have commented, to exhibit a lag. With my regular 270 it pretty much follows me exactly. The Ultra is always a little bit behind. This doesn't make much difference, as a practical matter in most circumstances. However, in going through a cloverleaf, the 270 would follow me through, but the Ultra caused Routis to recalculate in the middle of the cloverleaf. The advantage of Routis, however, is that it had already told me what to do ("Turn right, bear left, stay right") so I did not need to follow the display. I found that if I stayed at a 1 mile resolution that was all I needed.
All in all, between the Ultra and the regular, I will take the Ultra as my main unit. This may be because I am a regular shortwave listener, and have antennas all over the house, and used to have my own satellite dish in the yard to get and display weather satellites in real time on my computer (the internet made this obsolete - and made my wife very happy), so signal is important to me. I would rather have a assured lock above anything else.
This will be cross-posted in the hardware section as it applies to both.