Don't get me wrong they are very good at what they do. What scares me is when I go to a Home owner that thinks he knows how to do finish work. They are the ones that you need to watch out for doing this. They do not look out for the chute moving around. The other is the forms they try and make. I have seen a few blow out. They don't realize how heavy wet cement is. and Pow. the side of the blows out... This was one of those jobs. LOL Things like what you do, yeah you need the certs and training. I drove Semi for 13 years with a 53" Trailer and Conventional Tractor doing pick-ups and deliveries in Chicago. I got to they point where the harder it was to get into made want to get in there that much more. It was a few days ago I did a job where I had some left over cement. He ask if I could take it to his neighbors, I said sure... They were not sure I could get my truck in though... I said "let me look..." Well it was a tough one but I got in there. His wife came out and complemented me on my driving skill. He handed my a $100 tip. He said it was worth it seeing me just pop that truck in where he needed it. LOL It told him I cut my teeth on driving in Chicago. There it was Moving Cars, Poles and Buildings... Out here it just Trees and Moving Deer. LOL
I have 2 Subvods, and haven't had a leaking problem with either one, even after sitting for a couple of days full of juice. Chis is probably right about the o-rings being missing. sometimes a extra o-ring gets stuck on the coil, and causes leaking.
Both the Samsung 30Q and LG HG2 are 3000mAh, but to me, the Samsung seem to last a tiny bit longer... but it may be my imagination
If it were me, I'd buy whichever was cheaper, because you can't really go wrong with either