I like my Ryobi 18 gauge brad nailer which is on the 18V system and my Milwaukee framing nailer on their 18V platform but my pin nailer is a Bostitch pneumatic. I understand you do not own a compressor but do you understand you can buy a small compressor AND a pneumatic pin nailer for what the battery powered tools cost? I have 3 compressors, one is on the Ryobi 18V system. It is plenty to power a pin nailer and is very portable. Harbor Freight pneumatic nailers normally work fine and one of their pin nailers plus the Ryobi batter compressor would be pretty inexpensive. The compressor could be used for many other thing. Other nailers and staplers and airing up your car tires. Just another option for consideration. I also have a small Senco 120V compressor which is pretty quiet and very portable. Also around $100.