Yorr best bet for dealing with simulcast systems is one of Uniden's SDS series scanners. Yes, they are pricey compared to earlier models, but they do handle simulcast. Simulcast issues are extremely location driven. If you are in the right spot, such as very close (like a quarter mile) to one of the transmit towers (sub-sites), then you might not have an issue. In some cases, if you are in a 'low spot', surrounded by several hills, those hills might block signals from all but one site, allowing you to receive the system. Or, if your house has metal siding, or foil backed insulation in the walls, you might experiment by trying your scanner at various places inside your house. You might find a 'sweet spot' where it will work. There have been cases where a move of as little as a foot make a difference between working, or not. A directional antenna, aimed at one specific sub-site, might also work, but by concentrating your reception to a single direction can impact your ability to monitor other frequencies & systems in your area.
Read more about Simulcast in this Wiki article: Simulcast digital distortion - The RadioReference Wiki
As already noted above, the 436HP & 536HP are not as effective against simulcast as are the SDS series scanners, but they are better than Uniden's P2 series. Whistler's scanners do not do well at all with simulcast, other than cases where your location makes a difference between working, and not handling the system. You might keep an eye open for one of the SDS scanners popping up at an attractive price in the classifieds here on RadioReference, or on eBay. Keep an eye on the vendor mentioned in this thread, Main Trading Company. MTC often has a promo on scanners, either a lower price, or if purchased with another item.
Should you decide to "roll the dice", and try a 436HP, or 536HP to see if one of these works for you, make your purchase from a dealer that does not hit you with a sizeable "re-stock fee" for returns. Generally, you would still have to pay the shipping costs for returning the scanner to the dealer, and depending on where you made your purchase, you might also have paid the initial costs of shipping the scanner to you at time of purchase. Amazon has a very "buyer friendly" return police, without penalties. Initial shipping from Amazon would be at no charge; based on the cost of the item, the unit's cost qualifies for free shipping. You would pay for return shipping (unless you have a Prime account).
Whether you eventually by an SDS scanner, or one of the x36HP models, do not pay a dealer to program it for you (and skip the "optimization" also promoted during the sale). You can download the Sentinel software from Uniden, which is free. You need it to maintain the database in the scanner, as well as apply any firmware updates (if & when any are released). You can download Sentinel & 'test drive' it before you get the scanner (you can install it before even ordering one of the scanners). The 'Easier to Read Manuals' site has links for the scanners, as well as the version of Sentinel used for the SDS and x36HP scanners. Since you are a Premium Subscriber, you can use software such as ProScan, which has features not included with Sentinel, and allows importing from the database here on RadioReference. ProScan does have a 30-day free trial, as does ARC536.
