For A500+ : Mini Mega Chip 2.1 OR MegAchp 2000/500

[KLund1]

Hello,
  I have a A500+ (plus) this an Agnus(fat Lady) 8375R0 installed.
I also have a DCE Mini Mega rev 2.1 just like pictured below.
https://www.vesalia.de/e_megi.htm

and a

DKC(?) MegAchip 2000/500 with an 8372B installed
https://bigbookofamigahardware.com/bboah/product.aspx?id=1941

Which would be a better upgrade for the A500+ ?
I'm still a little new the Amiga and I'm learning as I run into things.

[KLund1]

Many thanks!
Understood.
Neither needed for a standard A500+
Looking at ACA500plus. This seem to be the  "Swiss army knife" type solution for p[resent and also further upgrade. I do not mind it being outside the case. 
Again thanks

[KLund1]

Wow, more info for my Amiga nube brain. Thanks.
Any suggestions for a reasonable 2mb trap door ram upgrade?
Or do i need just 1mb? my PCB has 8  256Kb chips on it. is that 1Mb on board?
Is there a upper limit for the amount of 'Chip Ram' a 500+ can access?
I will be running 1.3, 2.04, & 3.1 kickstart's in a switchable PCB I have.

[KLund1]

Understood.
Again thanks for all the help.