I think the learning curve is a reference to someone that is new to FBS. Since all of your choices are FBS, your only extra time will be learning the nuances of whichever machine you choose (ie, very little time to get effectively hunting). My first FBS was the Safari and I had read everyone on the net say that it takes 40-60 hours to wrap your mind around it and become good with it. Well, I considered myself intelligent and experienced at that point + had the musical background that folks said would help (guitar/organ in garage band thru college) and arrogantly thought itll take me maybe 10 at most. Got the Safari, hunted with it and quickly got decent with it. Finding as much as anyone. But at about 50 hours, something went clik in my brain and my finds shot up and my trash shot waaaaay down. I remember the exact moment it happened too. weird. The only thing I can tell you to shorten that FBS learning curve is TRUST YOUR MACHINE. When I started trusting my Safari is when it happened for me.
I have read that the CTX is better balanced than the eTrac, but i have no personal experience. Hopefully someone more knowledgeable will chime in on this.
Again, since you said money isn't a problem, get the CTX. Heres another recent thread on the CTX forum where I suggest having your dealer preload his proven programs before he ships it: http://www.findmall.com/read.php?86,2256269,2256299#msg-2256299 . That should ease your 'technically challenged' comment.