"The DB4 has a better performance spec and it is half the price."
Charles indicated that he has long coax runs in his house and therefore he wisely purchased a pre-amp. The LaCrosse I mentioned was the model with the built in preamp which I got on-line ~$115 including S&H. Add the cost of the pre-amp, which is visible in the pictures he attached, and the cost savings go out the window.
"Better" is relative to one's needs. I wanted an antenna that received the Carbondale station along with the St Louis stations. The LaCrosse looses only ~ 1 dB in the 113 degree differential between the aiming azimuths of KNLC (the most difficult STL station) and WSIU. The loss with the more directional DB4 in these conditions using the HDTV Primer graph is about 15 dB. So much for the ~ 2 dB "better performance" of the DB4 in these conditions. Charles must be getting a reflection from one of the 3 water towers in town for WSIU.
"Othe LacRosse users have suggested that the beamwidth drops off significantly as you move down the UHF band."
I would like to see your source. There is no reason to expect the beam width response to vary significantly at different frequencies. The LaCrosse has no director or reflector elements that focus the beam width. It uses broad side phased array technology. There's nothing similar on the market to compare it to.
"all the test have been subjective with no measurements."
The fact of the matter is the signal strength readings this morning from a 622for one of the worse worse case azimuth scenarios, ch 8.1 Carbondale and ch 11.1 (frequency ch 26...toward the lower UHF band) St Louis WITH 134 DEGREE DIFFERENT AZIMUTH HEADINGS was 93-95 and 92-94 respectively which is typical and quite good.
While the gain for channel 8.1 will significantly lower when WSIU DT reverts to VHF, something I disclosed in my previous thread after your initial comment, the best ATSC propagation conditions occur in the VHF upper band - - and yes I have a source. The empirical evidence suggests I will get an acceptable signal as the WSIU channel 8 NTSC signal is only slightly noisey. I can move the antenna to the roof if ~3 dB additional fade margin is desirable.
Frankly I don't understand how someone who does not even own the LaCrosse-A and has no empirical experience with it can make accurate comments concerning its use. You even state: "...no-one has run a scientific test which is strange - all the test have been subjective with no measurements"
P.S. What makes you think this area has significant multipath issues? My comment to Charles concerning the LaCrosse was based on the fact that it doesn't.
Red I noticed your "PRO" feelings about the Lacrosse. I've been looking at Antennas Direct website and the difference in price between DB4 bundle and the Lacrosse A is only $9. Now my question to you is based on your knowledge of the Lacrosse which antenna would be better for me. All stations are 30 miles from my house with only a 2 degree separation. Also I plan on a roof install with about a 25 ft run to the junction box in my garage where the signal would be split to 4 rooms. Where would be the best place to put the inline amp plug in before the box or after the box in one of the rooms?