Magnaflux said:
Try playing some people who haven't played the DS version and whip out a Megatank, that's good fun right there.
"OMFG that thing fragged my Neotanks!"
Yes, buy the DS version. Multiplayer alone without any cables, etc makes it worth it.
The Megatank. Expensive, but can be devastating if you can get it into the action. Just make sure you have a transport nearby to keep the cannons stocked
Magnaflux said:
EDIT: things I like about the DS version: 1. The top screen can be used to show more detailed information about your troops' abilities i.e. a sub is very strong against some ships/vehicle weaponry/and other things. 2. The DS version has battles on two fronts, some with one air and another on land. Switching equipment between battle fronts makes for some different strategies (plants are on the lower front).
The GBA versions are good, for sure, but the DS version is way better.
Some additional points:
1) While using keys is fine, using the touch screen for play is much nicer once you get used to it.
2) The DS version introduces the CO tag system, which is really well implemented and affects strategies a lot.
3) A ton of COs.
4) Tons of unlockables and things to buy with the points you earn.
5) A few other new units, like aircraft carriers and pipe runners.
Combat mode sucks, but it doesn't matter as the rest of the content is excellent.