We have a Browning Buckmark, and a Ruger Mark III, both of which are very reliable and accurate guns. We also have a Sig Sauer Mosquito , which is not.
Training means being ready. If you train with a gun that almost never malfunctions, you ain't ready. Part of training should be how to clear malfunctions. Shooting with a less accurate gun forces you to work on the way you grip the gun and pull the trigger.
The Buckmark and (especially) the Mark III can be daunting to field strip and re-assemble for cleaning. The Mosquito is very simple. Ruger's new SR 22 is made to be simple to maintain.
Also consider Ruger's double action revolvers in .357 and pistols in 9mm, .40 cal and .45 ACP - all a good value.