How have your current wheels held up? As a heavy guy who carries too much, I've been fine with a 36 spoke rear wheel and 32 spoke front. But I will say that my rear wheel has a large gear hub which means very little dish and shorter than average spokes, both of which should make the wheel more sturdy then a standard, dished wheel. If I were starting again, making a dished wheel, I might be tempted to try a 40 spoke wheel, just because peace of mind means more to me than the weight of four spokes.
Likewise I probably would have gone with 36 on the front, but I got a good deal on a 32 spoke Handspun wheel with a Shimano dynamo hub and Salsa Delgado cross rim. Neither the rim, nor the spoke count I would have chosen, but the price was right, and the wheel has given me very little problem, although I do believe it has been in the trueing stand a time or two. But all-in-all, I have been happy with the wheel. I love having a dynamo hub, and the Shimano rolls so easily that I don't even notice it's there. I hear the Schmidt is better, and if had money to burn, I'd want to try it, but given how smooth the Shimano has been, I have never regretted going the more affordable route on that wheel.
My rear wheel started out with a Velocity Dyad rim. Fairly popular for touring and Clydes. Probably due to overtensioning on my part, but I felt it was showing stress at the spoke holes. When I broke a couple of spokes after the last rebuild, I decided to swap out the rim as well as the spokes and went with Mavic A719. I haven't actually loaded that wheel up with touring weight yet, but I commute on it daily, and I have no complaints.
If I were starting from scratch, I'd go Mavic 719's front and back with 36 spokes in front and more in back if possible (with my current choice of hub, it's not possible). I haven't been on my rim long enough to really judge, but it seems very solid.
But as for not having to true the wheel, just get it well built. That's not a guarantee, but as close to one as you can get. Obviously the wheel has to be made for the kind of riding you want to do, but if you're overloading a wheel and/or mistreating it, having it go out of true is the least of your worries. Get the wheel for the riding you do, make sure it's well-built, and trueing should be a rare issue, if at all.