Best place to buy Nexiq USB Link for Volvo PTT, Cummins Insite, CAT ET

For all people,
I want to buy communication interface mainly for Volvo PTT, Cummins INLINE and CAT Caterpillar ET.
I have seen NEXIQ-2 USB Link widely used for this application but i have few questions regarding their usage..!

1) For Volvo PTT 1.12 and 2.04 – do i need additional medicine to use Nexiq for Volvo PTT (cracked)??
2) Does Nexiq support all vehicle in Volvo PTT?
3) Does Nexiq support fully for cummins Insite ( Generator, Industrial Engine…etc??
4) Does nexiq support fully for CAT ET ( Mining Truck, Generator, Construction equipment..etc)??
5) Can I use nexiq for scania Truck??
Is there any other better option is there??
Nexiq Chinese clone vs Genuine which one is better??
best place to buy Nexiq?
A user review from uobdii (just for reference):
i have Nexiq china clone for 4 years, and Tech Tool PTT 2.04 for 1.5 years. Both work no issues so far.
1. NO need additional medicine to use Nexiq for volvo PTT
2. PTT support new truck up to 2016, but Nexiq.. no joy
3. Nexiq support fully for Cummins Insite
4. Nexiq cannot support CAT with the CDL protocol
5. Nexiq cannot Scania trucks
This is the Nexiq car list:
1, VOLVO TRUCK: FM10, NH565, FH12, FM12, VHD, FH16, FM7, VN, WC, WG, WI, FH565, NH12, FL6, FL7, FL10, FL12, NH525, WX, COMP04, FE, VHD, FH, FM, VM, FM9, F10, F12 , F16, NL10, NL12
2, VOLVO BUS: B12B,B12M,B12R,B6R,B7L,B7R,B9L,B9R,B9S,B9TL,PREVH,PREVX,3,MACK TRUCKS: V-MAC I, V-MAC II, V-MAC III, V-MAC IV, Service Diagnostic
3,VOLVO CONSTRUCTION EQUIPMENT (CE):
Wheel loader: L110E, L110F, L120E, L120F, L150E, L150F, L180E, L180F, L220E, L220F, L330E, L350F, L60E, L60F, L70E, L70F, L90E, L90F
Articulated Hauler: A25D, A25E, A30D, A30E, A35D, A35E, A40D, A40E, T450D,
Excavator: EC135B, EC140B, EC140C, EC160B, EC160C, EC180B, EC180C, EC210B, EC210C, EC235C, EC240B, EC240C, EC290B, EC290C, EC330B, EC330C, EC360B,
EC360C, EC460B, EC460C, EC700C, EC700B, EC700C, ECR145C, ECR235C, ECR305C, EW140B, EW140C, EW145B, EW145C, EW160B, EW160C, EW180B, EW180C, EW200B,
EW210C, FC2121C, FC2421C, FC2924C, FC3329C, PL4611
Grader: G710B, G720B, G726B, G730B, G740B, G746B, G780B, G930, G940, G946, G960 , G970, G976, G990
4.Navistar: ALL Diamond Logic Builder (DLB) ServiceMaxx
5.International: ALL Intune, MD32,
6.Freightliner: ALL ServiceLink:cascadia,century,columbia,Coronado,classic,FLDSD,4900FA, 4900SA,4900EX.
7.HINO: ENGINE:300SERIES, 500 SERIES, CR03_J08E, CR03_J05D, COMMONRAIL(J05E), J05D_US, J08E_US,P11C,
VCS, Hibrid, Inverter, Brake(ABS), AT_45043LE
8.ISUZU_GMC: 1996-1999 NPR Diesel and F Series
Include, NPR/W 3500, NPR HD/W 4500, This is for 6.0L V-8 Gasoline Engines only, 7.8L 6HK1 Engine
Isuzu: NPR, NPR HD, NQR, NRR, FTR, FVR, FXR with 6HK1 LG4 Engine, NPR, NPR HD,
NQR, NRR with 5.2L (4HK1) or 3.0L (4JJ1) Diesel engine. 6.0L V-8 Gasoline Engine
GM: W3500, W4500, W5500, WT5500, W5500 HD,with 5.2L Diesel Engine Only,T6500,
T7500, T8500
9.SCANIA VEHICLE, KOMATSU excavator, and MAN vehicle will be added
never used genuine Heavy Duty Diagnostic Nexiq… dont know the difference…chinese clone work perfect in my hands…but need luck i think. My friend has no luck with that…rework many times but still no joy.
i buy Nexiq from China CnAutotool.com support wifi and bluetooth. the Nexiq USB Link 2 you mentioned above doesnt support wifi and bluetooth as far as i know.
Good luck

http://obdtools.egloos.com/2028317