The CT is a wonderful trail! Like all other long hiking trails, there are some spots that are better than others, but the CT is uniformly stunning. As for strenuous, the altitude is a key factor, and there are some testy climbs throughout the CT, but the trail is fairly well marked, and very doable. The scenery is terrific, and this is truly a Rocky Mountain alpine setting, so you will get knock out sunrises/sunsets, along with thrilling lightning storms. Since we have had 36 inches of snow in the last 48 hours (I live less than 2 miles from the Waterton Canyon trailhead), the trail is tucked away in a blanket of white right now. The weather is somewhat predictable - you just need to be prepared and take precautions. You’ll enjoy more sunshine than rain in the summer (and, it will rain), and the humidity is really low. I always tell my hiking buddies that the most important articles are a good hat, a good pair or sunglasses, and some sunscreen. Resupply is not as easy as on the AT, but is not that much of a puzzle. Bounce boxes are effective. You are not going to have the “greens” of Oregon or Washington, but you won’t have nearly the bugs or rain either. I’m not qualified to speak to the PCT because I’ve only been on it a couple of time for short section hikes. I’m sure others will chime in. If it is important to you, the serenity of being alone is still very alive and well on the CT. I’ve hike days without seeing other hikers. Your choice.
TrailGuy