I just purchased my BX2380 last week. The LA340 and LA344 are identical pin on FEL's just different part numbers, the LA340 is for the BX23S TBL and the LA344 is for all other models.
Add an 'S' to either LA340S or LA344S for the QA (Quick Attach) removable front bucket. This reduces lift 17% for a FEL that's already a weakling vs other brands in this size tractor. 423 lbs lift that's pathetic, 509 lbs for the pin on which is also pretty weak. Will do what I need it to do but coming from a B2920 that would lift close to 1,000 lbs its quite the step down.
I opted for the plain pin on FEL for max lift. But then I don't need any of the other front implements anyway, just the bucket. If I needed the QA FEL and other front implements I would almost certainly step up in tractor size 1-2 steps.
I started using the FEL yesterday, within its limits it works fine no complaints. Removing/re-installing is pretty easy vs the old style FEL. Love how I don't have to hop on and off the tractor 3-4 times to remove/install the FEL now.
I do notice a bow in the bucket front edge, not sure if that was their before or if they bowed it installing the optional cutting edge but I'll probably loosen all the bolts today and see if it can be straightened out.
Something else to consider with the BX FEL they use thinner steel for the bucket, go take a look at a BX vs B side by side the B bucket is quite a bit thicker steel. If you are hauling bark chips or light soil doesn't really matter, if you plan to use your bucket like a bull dozer pushing stuff it might. I used my B2920 like a bull dozer to push big stumps around, demolish 8 foot high blackberry thickets, it was a beast. Ah the good old days lol.