use a double uni knot to tie either mono or fluoro to braid for a leader. it really depends on the type of water you are fishing. if it is stained you may be able to get away with braid, but with finesse a leader will put you miles ahead. this way you can use whatever knot you prefer. i love straight braid for topwater and hollow body frogs through slop, but i use 65 lb test.
should not tear up your rod guides. i have never heard of that though so dont quote me. different guides feel smoother than others but i have never had any problems. tight lines