by going up to " Cameras " above, you will find reviews
and you will find a very useful tool allowing a side by side comparison of camera bodies
here is the direct link to the tool
https://www.pentaxforums.com/forums/pentax-cameras-compared/?c1=Pentax+K-3+II&c2=Pentax+K-3
I have both, I got the deal being offered by B & H where I paid $7 over the price of the K 3 II alone and got the designated battery grip added for a total of $836 back in November
it looks like it is still being offered
https://www.bhphotovideo.com/c/product/1358285-REG/pentax_k_3_ii_dslr_camera.html
if you are looking to buy a new camera from one of the sponsors of the forum, be sure to check out this offer:
https://www.pentaxforums.com/forums/24-photographic-equipment-sale/97599-fre...opaz-labs.html
if interested in an " experienced " one, check the forum's market place to see if there are any interesting possibilities
______________________
if there is no hurry to buy, since the OP is from the United States, a possible course of action could be to rent a K 3 II and do a hands on trial before deciding to buy
Lensrental.com and Borrowlenses.com are the two companies I know of, I have used Lensrental.com without problems, never tried the other
just get the maximum protection plan when renting to save potential problems