@ET1775 , I have been in your shoes exactly but approached the problem from a slightly different angle; I knew exactly what I wanted after doing the research, and then just found a way to get it. Sell more stuff if necessary, but don't deviate, don't compromise. Doubles cost a lot of money and when you eventually hold that beast in your hands, there must be not a hint of regret, not s twinge of 'if only'. Wasted money is the greatest hurt. You must love that thing genuinely, period.
For me functionality was an absolute criterion. If I read anywhere of a glitch, if my engineering mind perceived a potential weakness, that one was excluded - so I chose Heym.
It had to be classic and stylish, beautiful form from every single angle, because that is what a double is; art. So I chose the Heym 89b.
It didn't need to have any adornment, the form and line were enough, I wouldn't regret not adding a game scene - I was going to hunt in the game scene! But I settled for simple edge engraving as it enhanced the line, and didn't cost much. If your budget is tight, drop it, an 89b in the nude is beautiful.
Then the hardest part, the calibre. I leaned upon the term 'necessary and sufficient'. I wanted to hunt buffalo mostly, plains game too, and maybe an occasional elephant, but be equipped so that if an elephant emergency eventuated I was sufficiently gunned. I had to be able to handle the calibre, not just the recoil and the carry weight, but the free-standing hold on target for ten seconds test. So for me that was the Africa frame, not a gram more. Bottom line: the 450/400 3 inch Nitro Express. All you will ever need on planet earth.
Finally the sights. The Heym express iron sights are great, but in my case I feel for 50 metres or less. The Heym dovetail will allow you to add a red dot easily so now you are good for plains game out to 100 metres also. Very soon there will be a small 3x powered red dot mini telescopic sight, already exists but the base fitting is wrong. Then you are good for say 150 metres. For more than that you are no longer in double territory in my opinion, you have lost the double sniff.
I have now hunted with my new Heym, I am utterly satisfied I made the exact correct decision. I stroke the thing while I walk through the bush, all is good. Perfection exists, all it cost was money.