What is the best RC Helicopter out of these?

i have been learning to fly RC helicopters, and am getting good, now i want to purchase a bit more advanced model now, what do you think out of these listed models do you think would be the best option… Majority are Walkera, what do you think of Walkera? What are spare parts availablility like? thanks
if you have any other suggestions let me know.

http://www.ebay.com.au/itm/Walkera-V200D03-RC-Helicopter-2-4Ghz-W-DEVO-8-RTF-Christmas-Xmas-Gift-/250911612641?pt=AU_Toys_Hobbies_Radio_Controlled_Vehicles&hash=item3a6b7f5ee1

http://www.ebay.com.au/itm/Walkera-V400D02-2-4Ghz-6CH-RC-Helicopter-3-AXIS-GYRO-RTF-Christmas-Gift-/250911596157?pt=AU_Toys_Hobbies_Radio_Controlled_Vehicles&hash=item3a6b7f1e7d

http://www.ebay.com.au/itm/Walkera-CB180D-Helicopter-2-4Ghz-Edition-RTF-Xmas-Christmas-Gift-/250912288308?pt=AU_Toys_Hobbies_Radio_Controlled_Vehicles&hash=item3a6b89ae34

http://www.ebay.com.au/itm/190591691122?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

http://www.ebay.com.au/itm/250912343335?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

None there all chinese garbage.

Get either: JS TZ-V2 .50 Size Nitro Helicopter

Thunder Tiger Mini Titan E325

Or the link below has a good one:

http://www.ebay.com.au/itm/RC-New-500-3D-9Ch-Alloy-RTF-500-Complete-Helicopter-Trex-Radio-Remote-Control-/190585303063?pt=AU_Toys_Hobbies_Radio_Controlled_Vehicles&hash=item2c5fc4f017#ht_14533wt_1132