Either of the three would be a fair starter car (never been a fan of that 4-tec though, layout seems unorthodox to me). Remember, you need to have access to some decent part support. Nothing’s worse than having an un-drivable vehicle due to lack of no readily available spares. Some advice on these RTR's...don't get caught up on 'how fast can it go?'. Speed is useless without control, not a good way to start in nitro.
For this reason I would recommend this:
http://www.hpiracing.com/kitinfo/10053/I had the ‘Type SS’ version of this many years ago as my starter. The car hasn’t changed much really. I would certainly recommend this to someone starting out. Parts are easy to come by, cheap, and a great car to wrench on.
Before you know it you’ll be moving into the Serpents, Mugens and Xrays

Good luck!