I've found all this talk of bad battery life on LTE to be dubious.
Early LTE devices certainly did have bad battery life, especially because their LTE modems were on dedicated chips instead of on the SoC itself. But more recent ones? I haven't noticed any significant difference running it either way.
Of course, there are plenty of variables and a phone trying to maintain a bad LTE connection versus a good HSPA one might expend more energy, YMMV.
But if you get the LTE variant, you have the option to try both, and the SD card slot is a nice thing to have IMO. The LTE variant also has pentaband HSPA, which will come in handy if you travel abroad.
My phones: Galaxy Note II SGH-T889V (with LTE enabled
/ ext4 SD card support on TouchWiz ROMs
), Motorola XT-1045 Moto G LTE (TWRP
Previous phones: Nexus S GT-I9020A, Galaxy Gio GT-S5660M (Arpeggiomod ROM
/ Discussion, stock rooted ROM
), Motorola XT-1032 Moto G.
Phones for which I play "tech support" for family and friends: Galaxy Nexus GT-I9250, Galaxy Q SGH-T589R, Galaxy 551 GT-I5510M, LG C-800G Eclypse, Motorola XT-1032 Moto G