I think some are for you and some are not.
I started with a Progress and after one year acquired more razors. I have learned from quite a few of them:
Mikael PIF'd me and old type ball end (Open Comb). It taught me to be very accurate with the angles, otherwise it just would not cut. And it helped my overall technique. These days I don't use it, it's just too cumbersome.
I bought a GEM Micromatic from pedro83. It taught me a thing or two about pressure. Helped the overall technique as well. It gets used a lot and I love it, but its an aggressive one. I prefer it to the Ever-ready 1912 I have.
I have a british aluminium handled ball end tech, which is very mild, but shaves nicely. I use it for travels mostly.
Then I have an aristocrat Jr., which I do not get along with. Im sure its a nice razor, but for me the shaves are not up to par, on the other hand it is one aggressive son of a b***h, which gives me a nice sore face every time.
These days I can't wait to get up in the morning and take the 37c slant out for a ride. It is the best of the lot for me, no irritation, every time BBS results, and its the razor that has nicked me the least of the lot.
I'm sure not all razors are for every one, it's just a matter of finding those that are for you, and then either put the others in a display cabinet or sell them off. But if you have only tried straight bar DE's so far, I would say try some OC's, a slant, some SE's as well. All of the razors I have tried (only 7 so far) shave very differently, but there is a lesson to be learnt from each one of them. And each of these lessons will make the experience with one of your "old" razors different too.
/Max