I am so lucky to drive and work on all three car because I helps in hobby shop.
from my ppoint of view, FW-05 is most durable, but to get it run good, you need to spend as someone else said some more money. the car is very easy to drive as it is more stable, it has lot of punch but the top speed is limited compare to other two.
it is easy to work on but just need to spend some money on it
overall, easy handle but need too many upgrade like other Japanese car
G4evo, one of the best car, good aceleration, high speed, and easy setup. even though EVO version come with many upgrade, you still need to buy the low friction belt, they are the must.
as G4evo come with many upgrade, as you crash it, the repair will cost a lot. part is not cheap in US unless you buy them from HK. you have to wait. the space for servo mounting is tight, beware of it. overall, very good performance but the price price. and you need universal starter box
S710, the performance come out only when you set it right. it is the car that has most performance out of the box, as Serpent is trying to lower the price of RC, the car is bang of the bucks.
it require nearly no upgrade and the performance is proven too. but as said before , it require much more in the driver who set the car. choosing 710 as first car will give you many headache if you don't come to the forum often but once you master it, you master all cars.
the draw back on this car is that it is fregile compare to other two. there is limited practical upgrade part for those who like to burn cash
and you need people help you if you are learning.
overall : good performance for the price
most important for buying a car is part support as all 3 of them are good.there is review in many magazine out there.
so you only need to consider you budget and part support in LHS