Hmmmm....I just tried them out. I really liked the STG-44 although there is a serious problem with the reloading animations not making any sense with it (i.e. clip on the side...different weapon size etc.)
As far as looks go, the garand and k98 are nothing special (I think the k98 looks pretty bad actually) function wise....well if you want a laser scope on a k98 and garand, go for it...I find it a little bit cheap though. just my $0.02
There's a fine line between nice custom models and cheating loopholes like gigantic red and blue spikey balls for axis and allies so you can see them coming a mile away and sticking through walls (which I've seen btw) I think those garand and k98 models are very very very close to or even past that line.