Erno says he favors Arizona and Washington State solidly over USC, California and Oregon and only the Trojans haven't offered.
"I grew up in Southern California and always followed USC," he said. "Watching them play is amazing. They have the best athletes in college and I love the passion that everyone there has for the game.
"I can't wait to see how USC looks next season," he said. "Especially on defense…the linebacking corp is amazing. It's gonna be unbelievable to watch them play."
He says he already attended the Trojans spring practice. "I talked to (linebackers) coach Ken Norton, Jr and he said that they are highly interested in me," he said. "But they haven't offered yet."
Erno is also friends with Trojan linebacker Luthur Brown (also from Lakewood High School). "I talked to him and he just told me to go where I'm comfortable," Erno said.
But USC isn't the only school where Erno has friends. He's also close with Arizona linebacker Adrian McCovy. "He tells me a lot about them," Erno said. "He says they are getting really good. Their goal is to beat USC and take the Pac-10 title. They are working really hard and are making big goals and I like that.
"We talk a lot, but Adrian doesn't really give me a lot of advice on recruiting," he said. "He just said to have fun and enjoy it and that's what I plan to do."
The Wildcats were the first school to offer Erno about two weeks ago and he plans to visit them unofficially on May 8-9. He says that Arizona and Washington State are both recruiting him the hardest and also plans to visit the Cougars on June 20.
"The new coaches at Washington State are really cool," he said. "They send me handwritten letters every week and they seem to really care about me.
"Plus, they have three senior linebackers and they told me that I'd have a good chance to start right away," he said. "I think they'll have a decent team this year and that the coaches are getting organized and getting things going."
Besides visiting Ariona and Washington State, Erno says he'll also be attending the USC camp the weekend of April 19 and may also participate in the Under Armour / Scout.com combine in Los Angeles on May 31. "I went to a lot of camps and combines last summer and I don't plan on going to too many this year," he said.
He also will likely visit Cal and Oregon over the summer, but hasn't set a specific date yet. "Cal has been a top 25 team for a few years now," he said. "I like the way they play and the academies there are great.
"I like Oregon because they run a similar defense to my high school," he said. "It's real fast-paced and smashmouth and that's what I like."
Erno finished his junior season with 96 tackles and seven sacks. Lakewood High School finished the year with a 7-4 record (losing in the first round of the playoffs).
"I can read the ball good," he said. "I can hit hard and I hit the hole really fast going downhill. I can stop the run well too.
"I play with passion and am real hard-nosed," he said. "I'll hit you before you get a chance to hit me."
Erno says he can bench 310 pounds and squats 415.
"I want to improve my sideline-to-sideline skills," he said. "And I want to be making more tackles downfield. I lift everyday and do a different part each day. Plus, every Sunday I go to a speed coach because I'm trying to get faster and quicker (claims a 4.75 forty)."
Erno doesn't plan to make an early decision. "I want to wait and see," he stated. "I won't commit early. I plan to take my time. I don't want to sit for three years, so I'd like to find a place where I can get some early playing time."
He reports a 2.5 core GPA and a 1300 SAT (three-parts).