After my success of finishing my 1970 set, I immediately got to working on compiling my lists of needs for the next two sets on my agenda - 1959 and 1969 Topps. I was asked yesterday about what criteria I used in order to decide which set to pursue next and how many I liked to have going at one time.
Well, I had intended to start 1959 last year when I completed my 1955 Topps set, but I just had been too lazy to sort the ones out that I already had and map out my needs. When i choose a set, I usually go by how many individual cards I have of each set to start off with. I have amassed various amounts of each year of Topps there is. Some years more than others, of course. For example, I have a good many 1964 Topps, but very few 1953 Topps and even fewer 1952 Topps (yeah, I know, I can keep dreaming about that set).
I chose 1969 because I THOUGHT I had more singles of that set than I did of 1972. I might have been mistaken, but oh well, it is official, I have started it.
As far as the number of sets I have going at once, well, I have had a bunch going for a while. It's just that some move faster than others. My 1948 Bowman set will take forever because the Yogi Berra I need is pretty dang expensive. My 2010 Allen and Ginter set that I have been working on could take seconds to fill if I went on Sportlots, but I lost interest. I'll get it eventually.