I certainly did not intend to spark off a firestorm of lumber stick swinging! (We are reduced to pissing over the merits of DeWalt cordless saws.....really?!)
However, I do see the debate over the 75 vs the 55 as genuine and valuable. It is really the greatest and longest raging debate that I had within myself regarding the purchase of these tools.
For me it came down to this: I have, and regularly use, a table saw.
For all deep, long rips of hardwoods, I use the table saw and have from Day One.
The only exception to this is exotic solid core doors. I cut on them and every other type of door (old, new, antique, ageless, priceless, historic, and folkloric) on a regular basis. That said the number of times I'm cutting down a 2 1/4" door is, frankly, minimal.
In those instances, I'll turn the door over. In the off chance I have to cut a 4 degree bevel on an entry door, I guess I'll do what I've always done, and charge what I've always charged. It will take more than one to make up for the cost of a 75.
Should the 55 ever bog down, I guess I'll make two passes.
In the meantime, I plan on using my 55 on my MFT and making 95% of the cuts that I planned on making with my 75. If the time ever comes that having the 75 in the stable makes economic sense, I will buy it without hesitation and without disparaging comments to those who decided otherwise.
These tools are expensive enough; let's remember to enjoy the simple pleasure of using a hard-earned tool.
For me, the 55 made more sense, for others, not so much.
Beyond the merits and reasons of the decision, let's leave it at that.