Best decoder for Doodlebug

[Vectorer21]

I have an N scale Spectrum Doodlebug with DCC (2 function) installed.
I would like to upgrade to something better, ability to use CVs 3, 4, 5, 6, etc. I don't care about sound.
Can someone please tell me what decoders would be suitable replacements and if I can do it myself.
Thanks

Lloyd

[Chuck_S]

Reply mainly to see if there are any other "doodle buggers."

I just purshased a NIB doodle bug last month (Jan '23). Interested in a sound decoder assuming this model keeps running.  I'm unable to remove the body shell to lubricate the gear drive which is noisy and my last doodle bug died a couple years ago due to motor/gear issues..

-- Chuck