Tried the 435but did not like it. Many reasons as discussed here on the uniden forums. Been scanning PS since I moved her in 99 and worked for BFD. and AC for years so am familiar with the 700 system
Both the 436 and the 536 work fine on the 700 system. I've used both, as well as the HP series. It's a lot personal preferences as to which you prefer. I still use my 396XT also.