I'm moving from a double and bash set up with a road cassette at the back to 1 x 10. I will therefore require a chain guide of some sort. I have never ran one before as I never had any chains drop off with just a front mech. I was therefore thinking that some like the E13 XCX may be the answer. Obviously a full chain guide would be more secure but I'm struggling to justify circa £100 for something that I may not require.
What are other peoples thoughts and experiences?