Which one BMW ICOM and ICOM A2 to buy?

Products	BMW ICOM			BMW ICOM A2
Item NO	SP101	SP101-B	SP110	SP168-B SP168-C	SP168-BA SP168-BO	SP168
Features	best quality made by Yanhua Company, without software	Not made by Yanhua Company, without software	Full set with external HDD	General version, most users buy SP168-B. SP168-B (ICOM A2) has the same hardware SN as ICOM A1.	Apply new hardware SN which different from SP168-B/C, and work very well. SP168-BA packed not with software, SP168-BO contains HDD.	Wifi Version, which allows diagnosis and programming via wireless connection.
ICOM VS ICOM A2	1.     ICOM A2 support WiFi connection. 2.     ICOM A2 has better computer compatibility, 2014.9 BMW ICOM A2+B+C support almost 95% PCs on the world with Intel chip (I3/I5/I7 series). 3. ICOM A2 is especially modified for vehicles with OBD port and boasts a significantly more powerful processor and a 4GB memory, ensuring faster running speed and wider storage space. 4. Newest BMW ICOM A2+B+C support latest BMW cars made in 2013 and most MINI Cooper in full system diagnose and offline programming. 5. ICOM A2 features an Aluminum case, which is strong and solid to protect the machine from damage in harsh environments. 6. ICOM C for old series come with a diagnostics socket, and will be additionally equipped with a long cable around 20cm, which improves the connection of the ICOM A2. 7. To protect the MOST connector, the ICOM B for vehicles with optical MOST access will be equipped with a soft cover made of rubber instead of plastic cap.
OS	All ICOM and ICOM A2 OS requirement: 1.      Internal Hard disk comes with Windows XP 2.      Moveable Hard Disk run with Win7
Language	All ICOM and ICOM A2 are Multilanguage available.
Function	Generally speaking, ICOM and ICOM A2 support diagnosis and programming.