I have the HP-2, a 325P2, 436HP (2), an SDS100 & an SDS200, as well as a TRX-1.
Simulcast is extremely location specific. Depending on your exact location, relative to the transmit sites, you may have zero issues, or missing some communications, or hearing very little from your system of interest.
See
Simulcast digital distortion - The RadioReference Wiki
There are a number of systems and areas here in Dallas/Fort Worth that have problems receiving simulcast systems. Those include F
WRRS layers 1 and 2, NETCO (Northeast Tarrant County), Denton's P25 system, and others. Some time ago, after I had been using the SDS100 for a while, UPMan created a thread for members to post comparisons on how various scanner models performed at known simulcast trouble areas. I made it a point to drive around to spots that others had tagged as simulcast dead zones, and tried several different scanners: SDS100, 436HP, TRX-1, and 325P2. At each of the trouble spots, the SDS100 worked well, no noticeable problems tracking the system. The 436HP was getting 60 to 80%, the 325P2 about 50%, and the TRX-1 in the 40% range. (That
thread is locked, and I can no longer access the Google Docs spreadsheet that was used to record results from the many members that contributed results. As you've probably seen, UPMan passed away after a long fight with cancer, so I doubt that file will be opened for access.)
NETCO, the FWRRS layer that covers Euless, Bedford, Grapevine, and others in that portion of Tarrant County, has been tagged as a simulcast problem by some people. I regularly visit a friend in Grapevine, and have had no troubles there. I programmed my old, unused, 996T for her, and she can hear Grapevine calls. But, she is within a few blocks of the Grapevine site (northern part of Grapevine, just off Main st), so the strong signal from that location overrides the conflicting signals from the other
towers.
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If you are close to one of the sites for
Layer 2, you may indeed have no issues using an HP-2 or some other scanners. But if you are in the middle of the coverage area, surrounded by sites at varying distances from you, then you likely would have problems. The issue can be very specific. If terrain (a hill) or other structures (like a group of high rise buildings) shield you from one or more of the sites, you may not see a problem. But in other cases, simply moving a scanner around in your home might help, or might not. YMMV.
If you are going to be driving around the area (Tarrant, Denton, or Dallas County), you
will hit areas where simulcast distortion wipes out much, if not all, of your reception of certain systems. The HP-2 is not a good choice to deal with simulcast, even though it works well in areas without the problem. At home, I'm far enough out from the various systems to avoid reception problems, at least for now. Late this year, or early next year, once Dallas (both city & county) switch to the P25 Phase II, simulcast, system that is under construction, I'll be in the middle of the simulcast twilight zone. So, the SDS100 & SDS200 that I have will be earning their keep.
If you want more DFW Metro area comments, than I'd suggest that you request be moved to the Texas regional forum, where more local (to you) members will see it & comment. To do that, do
not create a new thread. Instead, click on the Report in the lower left corner of one of your posts, and request that a moderator move your thread to the state forum.