I'm a purely home electric guitarist, not gigging, with a small budget. Because I keep tripping over my lead, I looked at the cheapest wireless systems such as this one on eBay for £17. Has anyone tried these ultra-cheap ones, and if so are they useable - not for gigs or anything professional, merely at home instead of a lead? I'm thinking that they might have a lag, crackle or interfere with neighbours' TVs and so on.