I've had a lot of good luck with the MGC Thompson's. Configured as the M1921 with the 39 round drum and vertical hand grip, it's something that harkens back to the days of the Chicago gangsters. Remove the vertical hand grip and replace it with a horizontal one, add a 20 round stick magazine, and you have an M1928. The MGC Thompson in either configuration is something that works well without a lot of fussing about.
The Hudson M1A1 is a nice looking model gun that employs a more historically correct upper/lower receiver arrangement. The early release models were a pain, the later releases were a bit more dependable. Both have fire selector mode and safety controls as well as the extractor claws that can easily be broken.
The Hudson Thompson is intended to utilize a Hudson cartridge which can be difficult to obtain and tends to be a bit troublesome. Cartridges intended for use in the MGC Thompson can be used in the Hudson M1A1.
Best regards and good luck, Chris