Your lists are a great resource Richard. I have printed copies of many of them. I collect variants with my sets as well, and they are proliferating, especially with the internet and better scans which make even finding them on line in the absence of shows easier. But shows do make finding back variants easier, and alas there are few of them in South Texas.
To me the issue has become choosing between the many minor print defects that exist in all sets, and variants which in some way rise to a collectible level because they may warrant or eventually garner broader hobby recognition. I have a lot of what I view as only minor print defects as opposed to true variations in my sets. But, some print defects, for example the 57 Bakep, the 58 Herrer, and now the 61 Fairly have achieved widespread hobby recognition
I hope your girlfriend hits the lottery...and she likes you enough to invest in 52 high numbers for you
