I found the tubing ok to work with, but they dont give you enough. But the anti-kink coil supplied is trash. It only takes a few hours before the coil becomes a permenant fixture to the tube. Start to remove it, and it just shatters and falls apart into little pieces.
Apart from that, i've never used Ramsinks or tubing clips. The internal pressure from a 12v pump, the length of run and internal diameter do not warrant it. Most leaks occur by not tightening the screwed connectors or damaging the 'o' ring. You can check this by turning on the pump and moving the tube and connectors, if the noise/sound changes then air is in the connections.