Originally posted by justtakingpics No, not at all. One day I want to. I know I don't have the skills right now. I also looked at the FA 77. I am finding the manuals harder to use than I though and decided to look at autofocus options. I know no lens or camera will make great pictures if I can't take a good picture but I don't want to cripple myself. I suppose maybe I should just stick it out with the manual ones.
You are not crippling yourself by using less expensive, manual focus lenses. In fact, if you have to limit yourself to a single lens in order to afford a 70 or 77, you will be crippling yourself a lot more.
I agree with RioRico that you can get a lot of mileage out of your Takumars. I think at this point, learning technique will be more helpful than a new lens. My favorite portraits that I've done were taken with my Takumar 50/1.4 and 105/2.8; believe me, you're not crippling yourself with these lenses.
In many ways a 70 or 77
will be better, but only if you have the skill set to take advantage of the performance gap; like that focal length; and don't have to sacrifice the rest of your lenses just to own one of those.