I just bought this from a forum member . It mostly complete, came with the SKR board and a jackpot 1. I wanted a jackpot 3 what am i giving up with the 1? I need a router I was thinking about just a harbor freight one to get it running and upgrading later to a spindle since I can always use a palm router. I saw the Bauer but the Hercules looks much nicer, that then puts me in the price range of others. I thought ER11 would be nice for drilling so down the rabbit hole I go. I having a tough time wrapping my head around some of this stuff but I am thinking I am just trying to go to fast. I am pretty technical and this stuff usually comes easy. I have built many 3d printers, I have owned a hurco 3 axis mill but never really got the hang of g code before I sold it. so I know enough to be dangerous but not enough if that makes sense. so I am looking for router advice and some insight on the control board. I am going to do a 4x4 table but I might just do the 4x8 i do have to store it flat against the wall so I’m trying to figure that out too.
Cribbing from the Control Boards section of the Docs page.
Both are 32 bit dual-core 240mhz control boards. The Jackpot 3 has the esp and TMC2226 stepper driver chips integrated in the controller, where the Jackpot 1 the ESP32 and TMC2209 drivers are daughter cards. Jackpot 3 also has an integrated RJ11 socket for a pendant or Airedale expander, but I believe that can be accomplished through the existing expansion port on the Jackpot 1, you just have to do your own wiring. Both support FluidNC, Jackpot 3 also appears to support grblHAL.
If you don’t know you don’t need it. 
The one is nearly identical when in normal use.
I have both the JP1 and JP3. You will be fine with the JP1. I have my JP1 on the LR4 and it works great. I have the JP3 on my MPCNC with a laser. I do like having the ER11 collets with the 1/4” and 1/8” bits.
I’m also at the point of buying a router. I’ve found a little 710w trim router that comes with a 3/8” collet as well as the 1/4”. Perhaps not as convenient as ER11 but I’m hoping I can run stiff endmills that can cut to a good depth.
Hmm, you’re more likely to want an 1/8" collet than a 3/8" collet. If that router has a diameter larger than around 65mm, you’ll have some issues.