I use a remote line for secnaio play, i love it as it allows you to use a harness to hold the marker. I use a remote line cover to stop snagging.
I also use a remote line fill whip, as it get a bit anoying when you have to ask someone to help you re-fill your tank all the time.
For wieght saving they are the best, i have never have a problem with them. I have used them on numerous markers from A5 upto GEO3.