I'll speak on the side of the shavette. I for one learned straight shaving on the disposables, and they are all I use now for my straight shaving. I did give regular straights a good, decent trial. I just couldn't get comfortable with all the maintaining involved with them, and went back to the disposables. I'll admit that I use the top of the line Kai's and Feathers, but I also have and use the Parker straights. For the money, and a taste of straight shaving, you can't beat them. You can get a nice Parker with a good supply of Shark half blades for something in the $20.00 region. Once you get the technique down with them, and it is a long learning curve, the shaves are great. And the care and maintain aspect is nothing.
Oh, and as I always seem to have to remind new straight shavers, don't fall for that hype that the disposable is not a real straight, it is. And just like the regulars its still an open blade razor, just much sharper.