The L4 is an unlikely choice as spares are almost non-existant now, and no one runs with four cells as the Rules limit voltage to 3.7v. If your club is still running four cells, the the 12R5 is still the car to get as it will take four cells and spares are plentiful. It will also be 1S ready without having to change cars again.
There really isn't a bad car out there any more. The most popular choices are the 12R5, CRC GenXL and V-Dezign. A few use Serpent. Of them all, the 12R5 is the easiest to build and setup, it runs great from the box, and there are always people around to help with set-ups, spares and advice. The only difference between the winning cars of Jefferies and Levainen and the kit in the box is the gold side springs and a couple of bottles of damper oil. HTH
