B4 OR XXXCR

[ChrisCorbett]

I am sure this is asked over and over again so I apologise, I am just after to fresh view as to which 2WD to go for.
I am looking for 2wd to predominantly race indoor on carpet/polished floor and cannot decide which one to get.
Obviously spares availability it important but I will probably buy a load at the same time as buying the buggy. I always budget for £100 or so worth of spares when buying new car anyway.
I can't believe there can be a huge difference between these two, after all they both have tub chassis, servo in front, motor and gearbox at back and battery running down the middle.
I prefer the look of the Losi and have had losi kits before but am worried it is a bit old now. Someone said on here that is because Losi have lost interest in 10th off road?????
The B4 looks ok but not as nice however I think in general people think this is the better car.
I am no serious racer but have been running RC cars (racing and bashing) for 6 years now and want something that I will be seriously able to push and progress with.
Any thoughts appreciated