Upgrade Suggestion? (DDJ-SR currently)

I feel as though I'm starting to outgrow my DD-SR and I want to get something a little more up to date and is compatible with algoriddim djay. My dream is to move to something like a DDJ-SZ, DDJ-1000, or DDJ-800 but money is tight and no one wants to trade their SZ for a basic party set up (ddj-sr with 5 party lights and a massive dual 18" speaker) and I don't blame them. anyone got suggestions for controllers to look at? I would like to move to a club style controller or something with built in beat fx controls. 4 channel isn't a huge priority but its nice to dabble from time to time. thanks!