1. The spots look good and have with me nowhere sharp edges. 2. The ballasts have thin wires, so what? The Wago connection terminals 222-413 can be sure to connect (cross-section of copper conductors: 0.08-2.5 mm - suitable for flexible and rigid cables). Gibts also at Amazon 3. The springs are relatively strong but I find OK. The spot should indeed seated properly and secured ind the ceiling .. 4. I kept next to the television on or various radio devices. For me, nothing bothers or buzzing. I can not say anything 5. durability after 4 weeks, but after 6 months will complement this review. So far, all shine like before him - as it should be 6. The spots are really super bright. The light is pleasant with a tick into Gelbnliche, but as many adere LEDs go pleasant the greenish. 7. So far I'm super happy and he is truly unbeatable price - I'm just home improvement ...
