a tough call for me as well....they are both my books, and I have a little "ping" in my gut suggesting that I should sell one and keep one ( to free up some cash so I can buy another Pre-Robin Tec! )......wanted to get a feel from you guys as to which may be a better "keeper", and so far the overwhelming choice has been HT1, however, just like you said, the MF62 will be/should be the 2nd highest graded copy ( once graded )...nothing to sneeze at! The MF62 is much rarer in grade, but the HT1 is still high grade-ish, and is a top 20 GA Key.........I can not choose!!!!
I need more people to give their vote
Steve
In my opinion I would keep the 62...you WILL find another HT 1......maybe not a 7.0 or higher right away, but your not very likley to find another 9.4 MF62.......and I would rather have a lower grade HT1 and super high grade MF62 then two mid grade copies of both.
But dare I say....if you want the pre robin tecs enough to sell one in the first place then why not sell both? (thats what I would do )
Either way you can't go wrong!