I have used the LRP Blast and its a fantastic car for the money. It would be awesome on a polished slippery floor. I haven't used it indoors but i have outdoors on grass and also on tarmac including on ice for one meeting. Its embarrassed many a more expensive car especially when it gets very slippery. There have been a number of them running at my local club
www.cmcrc.co.uk and the have performed very well getting podium results in the A final as well as being strong beginer cars. The only thing that you do have to watch is the grub screws are tight on the drivetrain, but that goes with any car really.