dashcam recommendations

I unfortunately don't know about specific dash cams. Personally I use my old android phone on a suction cup mount to do the job. It works but it doesn't have nighvision. Uses 720p though. It was just a cheap and easy solution for me.
I know there are TONS out there, research pays off.

thats what im doing with my old Iphone. I was able to download a dashcam app.

any cheaper ones then go pro for side mount recorders

Depends on you budget.
If you have nice budget than i recommend you to go with > BlackVue Wi-Fi DR750GW or THINKWARE X500D.
If you are looking for dash cams under 200$ then you should go with Nextbase 512GW or Z-Edge Z3 dash cam.
Personally, i'm using Z-Edge Z3 dash cam which is very cool and cheap dash cam