Take yur time Buddy, the one toy that really took me to the next level was the TXS Caterpillar. Starts out at 3" tapering out to 4".
I would open up with the Cat then mount Master (the Goliath from
www.bigsextoystore.com) which is 3 3/4" tapering out to 4''.
Now I open with Master, ride 'em for 5 min. then mount'n fuck the Emperor for 10 minutes. Emperor is a modified Super Billy from
www.mr-s-leather.com , he starts out at just about 4" and tapers out to a little over 4 1/2" at 8" deep. A Heavenly Fuck let me tell you!
Keep On Stretchin'!!
Cheers,