same as what or8tal said: advantages of LRP are the automatic sensor when you switch from brushed to brushless, and smaller size/footprint.
but novak after service is just 2nd to none especially locally (Voodoo: take note
). and since i dont really plan to switch much from BL to BR, i went with the Novak. but thats my situation .... and the gtb/3.5r combo is plain and simple -- INSANE fast!
as for the thermal issue, i think as long as you gear it properly then you wont have a problem with either one. i keep hearing people complain about thermal shut downs of the GTB but that just basically tells you that they aren't gearing it properly. to a certain extent, thats what i like about BL systems, it makes gearing a bit simpler since temp really dictates how high or low you can gear them to get the maximum output from them.
just my $0.02 worth ...