As a paranthesis; I looked at the numbers you can get in 1944, which is 18 Marder III's for 5 Panthers - probably not a given deal though as the Panther is quite resilient (maybe it also has better optics?).
However, you could also chose to go with 9 Jagdpanzer IV instead of those Panthers, which IMO is a good trade if you want numerical advantage and decent armour. In an ACW-kind of fight (just a plain field with the tanks opposing eachother), the Jagdpanzers perform just as well as Panthers against the T-34's of the period (and you get as many as the russian player gets T-34's).
If the russian goes for 122mm weapons in anticipation of Tigers, you will have a serious numerical advantage with your Jadgpanzers. EDIT: Strike that, the SU-122 is dirt cheap in 1944 - but its armour is an eggshell and the rate of fire is really lousy. Also its optics seem to not be the best. As long as you trade shots 1-for-1 you should be fine as you'll hit more often and have higher ROF.
I guess I'm repeating what most of you guys already knew, but this info seriously revises some of my thoughts about armour mix and its tactical implications (depending on terrain and mission, etc).
This is only a viable strategy in heavy armour games though (500+ pts in '43, 1000+ pts in '44 of armour) as the use of the number of jadpanzer/panzerjäger you get increase proportionally - and these units' use in an anti-personell role is limited (esp. the Marder which doesn't have much HE and lack a machinegun). I'd rather go with 2 Pzkpfw. III than 4 Marder, but might go for 9 Marder instead of 4 III's; or, hell, 2 III's and 5 Marder might be the best of both worlds (the III is decent in an anti-personell role once your combined firepower that the Marders help set up has ridden the opposition of its tanks).
(In '43 you also get 5 Stug IIIG (early) for those Pzkpfw. III - but maybe that's the überstug and gamey to chose? In '44 you can get 10-11 Stug IIIG for 5 Panthers)
[ April 09, 2005, 07:31 AM: Message edited by: Xipe66 ]