Reds are too light for me, 45g Topre (in HHKB) feels just right.
Although I do prefer stiffer springs, such as MX greens or blacks, I am wondering whether I'd end up preferring 55g Topre instead.
Some would take your comment as a contradiction, but I understand exactly what you mean. At times, my HHKB is just right. Other times, my 87U variable. At times, I think my 55g 87U is God's gift to mankind, and at times I think it's way too stiff. Factors like how you feel that day, energy level, time of the day, even the music we may have on at the time have influence on our typing style and preferences. Which is why I don't want to sell any of them. They are all perfect when the time is right.
It also depends on the task at hand. The 55g is great for coding because I'm not typing continuously and I appreciate the snappy decisiveness of the keys. If I have a bunch of emails to type, I'll usually reach for a lighter board.
I'm not a keyboard collector as some are. My keyboards are my tools. A carpenter has different hammers and chooses the one best suited for the job at hand. Framing hammer, finish hammer, decking hammer, etc. One could argue that he 'could' get by with one and use it for everything.
If you spend a good portion of your days on a keyboard, it's perfectly acceptable to have more than one keyboard that you consider 'perfect'.