I haven't been on here in a while but had to share this... So I just love these models, I've mentioned before I have or have had all the Synergys models. I built my 516 and the first day at the field I sold it. It wasn't even for sale but he said, "i'll take it". I'll be out of work for a few months with shoulder surgery so I mentioned Id be selling my N556. Barely got the words out of my mouth and my bud Jim took it off my hands. They hold their value better then ANY other..... It's a bitter/sweet but I can build more right...Cheers