I hate to make recommendations about the radio, because what might be good for me may not be good for you, and vise versa. But I'll tell you this, I bought the 536 and also the 436. Had to sell a few of my older Unidens to pull that one off. I compared both and found that the reception and sensitivity was much better on the 536. I sold the 436 last month, and don't miss it. It ate up batteries and thats with quick settings for the backlight (10 second) and battery saving option in the menu. The 436 has a great display, but has some idiocrepancies I wasn't pleased with. 1) The display although large and easy to read, was also prone to banginging and scratching it. 2) Dust under display lens, comes in from earphone jack on top of radio. I hunted and found a rubber plug for stuffing in the jack to keep dust out. It worked!
After selling the 436 I replaced it with a second 536, and that has worked out well. I primarily monitor Somerset County, so I boke down the municipalities into two favorites List. One East and one West. Now I don't miss much!
If you do purchase a 436, buy it from a dealer that has a thirty day return in case you don't like it.