Advice on what lock to try to pick next?

[SiderealLacuna]

I have been picking for about a month now, and I can open 5-pin (all spools) Schlage cylinders. I also just picked my first Master No. 532, and have successfully picked it three more times with an average of 7 minutes. I am not sure what I should try next - I want something challenging, but not overwhelming. I have an American 5200 padlock, but I'd really like to get a UL 437 cylinder. In your opinion, am I ready for this from what you have heard, and if so, which should I choose? If not, what could I buy that would be more of a challenge than the Master No. 532 and the spool pins in the Schlage? TIA!!

[5thcorps]

I would stay away from ul437 right now. Master the basic mortise and rim cylinders first, Corbin/Russwin, Yale, Sargent and the like. They all have their own traits which will help when you finally move on to ul437's

[apb]

Since you can pick spool pins try the 5200, CW and CCW using top tension. But the serrated pins are the real pin in the a**.

[lock2006]

Try 1105 american padlock and the best padlock 6 pins first, then
7 pins that will keep you busy for awhile
and yes stay away from ul437 right now
make your way up hope this helps.