Looking to replace my generic one....it works and was real cheap, but ni-cd battery that doesn't hold charge long and often just stops pumping in middle of a tube acting like it's empty when not.....anyway....also looking at DeWalt and wondering how big a deal is difference between the much less expensive 18V one? 9,000psi vs 10,000psi - does that matter at all? What I have now is 6,000psi and does the occasional fitting that is difficult for a hand one. I use all Bosch stuff so battery/charger compatibility not a factor for me. 18V one says battery lasts for 16 tubes on a charge - way more than sufficient for me. So even longer battery charge life and 1,000psi more - worth spending 2x as much for some reason?