Having previously used only tippmann woods markers the sp1 was quite a change of perspective to me. Tippmann markers have the classic clangy bolt technology to them while the sp1 had the same as the vibe low force bolt. The gun is very quiet and also utalizes even more of the co2/ hpa in your tanks so you get even more shots than you did with the tippmans. Also when liquid co2 got into tippman makers the gun was fried. Slowed down and could no longer shoot straight. while the sp1 comes with a max-flo vertical regulator so if liquid co2 got into your gun the regulator would vent the liquid off the bottom.
The sp1 is not perfect however. As in most guns, stock items usually are not that great and the same goes for the sp1. The board is slow, only shoots 11 bps. While 11 bps is almost legal on full-auto the gun can still become better if you install better boards like the virtue sp1 board or the blackheart. I also hated the stock feedneck but as I said before most things are bad stock. I highly recommend using any gear for the sp1 that trinity paintball has like I am. The T-lock is a good feedneck to replace the stock one. The stock feedneck requires an allen wrench in order to tighten/ loosen it so it is difficult to put it back on if it falls off.
The sp1 is probably one of the best woods markers I have ever used and eventually plan on getting an sp8 to get a better gun. If you want to get into woods ball buy the sp1. It's cheap and simple to clean and so on.