Which SL ? 500 or AMG 55 SL

[wheels1]

Hi
I am considering a 500 SL or AMG 55 SL, any one have any experiences? Both cars under 30,000 and only about £5000 difference in price, 2003/2004 models.
Also i am a bit confused on the 500 spec.
some say 308bhp and some 388 bhp, some say 5 sped auto and some 7 speed auto.
Any help gratefully received.
Grant

[wheels1]

Thanks for the info.
Do you know if the 7 speed was an option on 2003/4 500's? as i have seen quite a few advertised with a [7] in the add and if so it may be looking out for one of these.

[wheels1]

This is one of the seven speed adds
http://www.pistonheads.com/sales/2092213.htm

[wheels1]

Thanks for your help guys.
The Bad news is, the person who was collecting my car tomorrow has [ JUST] found out they do not have enough funds, after putting a deposit down a week and a half ago. So its on hold until/ if i sell it again.

Now i have all the info and just taking my old car out 487bhp, i realized that its hard to use all the power as the traction control kicks in even in sport mode, so if i get the chance i will go for a later 388bhp SL [ i think]!
Thanks again.