I think your progress looks really good. I have used Enanthate in the past at low doses (200-400mg/week) and I never had a holy shit moment per se (except in the mirror looking at my traps, lol), but I just made gauranteed progress over time, and like you said, each PR felt easy, like I'd done it before. I didn't wake up one day 20lbs heavier, but it was a consistent climb and I gained 20lbs within the first 6 weeks, and probably a grand total of 25ish. My body dramatically recomps itself too. Last I used anything was August of 2003 and my bodyweight went from 250 to about 272ish and my bodyfat hadn't been better since I was 220, lol.
Sex drive was through the roof, so was performance. I always felt like I was in a great mood too and very clear headed. The first 2 weeks, I shot once a week, but I'd crash, with 2 shots a week, I felt like the King of the World straight through.
Just my experience, I think yours will be similar because like me, you'd been training and progressing consistently for a time before the cycle, and the gains aren't as dramatic as someone coming back from a layoff or someone who never made progress in the gym anyway due to crap training and lack of eating.
I hope it gives you some reassurance.....just expect progress to be eye popping when you look back over 2-3 months and not so much from workout to workout. And enjoy every last second of the body recomp and having the upper back and shoulder girdle of a comic book character, because unfortunately, that goes back to the before state a couple weeks after your last shot.