Go with the timmy, they have the ace the nasty doesnt unless you want to pay 150 more. The timmys look better and are getting cheaper as the new ones are coming out. Timmys are great guns and it virtually impossable to chop with the a.c.e. Also the timmys a.c.e. can detect black and multicolored paintballs. The sp vision cant. Buy a timmy, save a little money and you'll still come out ahead.
Vision Nasty Impulse=780
wierd...the only time i get FSDO is when i turn on my gun...is dry firing once enough to turn you away from buying an icredible gun? plus its the GZ timmies that have the ACE, and they are way more than 650.