Of those listed in the original post, the 270 isthe clear winner IMO. Delivers good energy on target at all reasonable ranges and has moderate recoil.

I don't like a 243, I justcan't help it...
A 300 WM is more than needed for deer.
A 30-30, not nearly as versatile as the other three and has a more limited effective range.

i heard they diddn't work to well but i may be wrong

From the chamberings you listed there is no doubt that the 270 (win) is the optimum choice. IMO regardless of what the list included - the 270 Win is an ideal deer cartridge. There are many other good cartridges out there. But after shooting close to 50 deer with the 270 from point blank to 400+ yds the 270 has never failed me. I shot deer with various other chamberings but the 270 is my pet.

.308 winchester, I hunt Louisiana and have never had one take a step after the hit. Always go for the front sholder. Had a 7mm mag and it hurt my sholder to much for target shooting. 308 not hard and will take care of our 110 - 160pound deer down here with no problem. Use cheap ammp on NEF / H&R out to 300 yards with no problems.

Heard what didn't work well? The 270? Who ever told you that is an idiot. If the 270 doesn't do the job on a deer its either the shooter lack of shooting ability or the shooters choice of POS ammo, either way its the shooter. The 270 is probably the best deer round out there followed by the 30-06 which is the best all-around round.