Yes Bob I have compaired the 2. I have the B40 and my father-in-law has the TX200. When I first recieved it we done a comparison right off the bat(after I loosened up the loading port.) Cocking the B40 isnt as smooth, but when shot the B-40 had alittle less spring noise and was as smooth as the TX200. The accuracy on the TX was alittle better. We were shooting 30yrds. The B40 I could do .250 groups in 5 shoots the TX would leave a hole! Be warned the B40 didnt stand the test of time, I broke the mainspring. I have Installed a JM spring and hornet seal. Im a machimest so making new guides is no big deal. I also done other work the tighten up tolerances. It probably wasnt needed but what the heck, I figured if I was going to tune it I might as well do what ever I could and be able to shoot it for a long long time. Now after the tune is when the B40 really shines (you probably already know that though) I hope this helps.
Jason
