I'll be making the switch from HK to Glock in the next few weeks and I am debating between a gen. 4 G34 and a G17 for a full size pistol. This will be used for classes, home defense, SHTF and maybe some IDPA (I haven't taken the plunge in to competition shooting yet). I know the 34 is a little longer, thus giving it a little longer sight radius, a little lighter trigger, but is there anything else to consider when deciding between the 34 and 17? I will also be going with a G19 and G26.