I'm just going though bases, collecting flags and battling people to using the exp share to level up guys that were sitting in my pc.
My guys at the moment are level 91 Deoxys, Level 68 Infernape, Level 70 Ditto, Level 68 Luxray, Level 34 Vigoroth, and a Level 23 Swablu.
I liked it. Buying all of the furniture was a breeze for me since I was constantly training my pokemon at the Elite 4 and the leader rematches, and I pretty much use that as my base over the Underground one. I can also plant berries outside of my house and not have to go too far to water them.
Finally got my main team up to level 100, now working my way up though the Battle Arcade.
Update: Got swept by Dahlia's Medicham. You have to be joking me.