which speakers?

I work with bestbuy and I have been getting some employee purchase plans from different car audio companies.  Alpine had one last month however I got my order in too late.  We should be getting another one from Alpine soon.  However the best 6 1/2 components were the SPR-17s.  I have just recieved one from JBL (need to place the order soon however...hence the asap in the title.) and they are giving us a much better deal (looking at the discount anyways) than Alpine was.  However I need help deciding.  I know what im leaning towards however I would like some input from some of you first. 

Following is a list of each set of speakers that im looking at.  Followed by a quick spec sheet as well as the website from the manufacturer. After that the price per set (2 speakers per set, Im looking for 4 of them)

Please let me know your opinions.  Ive never had speakers from either company so I have no experience with their products.  Ill say right now that im not looking to buy the $500.00 competition ones though I would like to know what people think of them and the price as well.

Alpine

SPR-17S

SPECIFICATIONS

General
• Sensitivity: 87dB / W(1m)
• Impedence: 4 Ohms
• Frequency Response: 65Hz - 27kHz

Dimensions
• Crossover Size (in): 4-9/16'' x 2-7/8'' x 1-1/4''
• Crossover Size (mm): 115.4mm x 73mm x 32mm
• Woofer Mounting Depth (in): 2-5/16''
• Woofer Mounting Depth (mm): 59mm
• Woofer Mounting Diameter (in): 5-11/32''
• Woofer Mounting Diameter (mm): 136mm
• Woofer Diameter (in): 6-1/2''
• Woofer Diameter (mm): 165.1mm
• Tweeter Mounting Depth (in): 18.3mm
• Tweeter Mounting Depth (mm): 3/4''
• Tweeter Mounting Diameter (in): 2''
• Tweeter Mounting Diameter (mm): 51mm

Power Handling
• Power Handling Capacity (Peak): 330 Watts
• Power Handling Capacity (RMS): 110 Watts
• CEA-2031 Power Rating: 110 Watts

https://www.alpine-usa.com/US-en/products/product.php?model=SPR-17S&lang=en&tab=F

$136.00 (SPR-17S)

JBL

Component Systems
Power Series
P660C

SPECIFICATIONS 
  
Warranty One YEar
General 
Power Handling, RMS 90 Watts
Power Handling, Peak 270 Watts
Sensitivity 94dB
Frequency Response (±3dB) 45Hz - 23kHz
Mounting Depth Mid/Woofer 2-1/4" Tweeter 1-3/16"
Impedance 2 Ohms
 
https://www.jbl.com/car/products/product_detail.aspx?prod=P660C&Language=ENG&Country=US&Region=USA&cat=COS&ser=POS

$100.00 (P660C)

Component Systems
GTi Series
C608GTI MKII

SPECIFICATIONS
 
General 
Power Handling, RMS 150 Watts 
Power Handling, Peak 600 Watts 
Frequency Response (±3dB) 50Hz - 21kHz 
Sensitivity (2.83V @ 1m) 89dB 
Impedance 4 Ohms 
Crossover Frequency(ies) 3.5kHz, 24dB/oct 
Mounting Depth 2-11/16" Woofer, 1-1/8" Tweeter 
 
https://www.jbl.com/car/products/product_detail.aspx?prod=C608GTI%20MKII&Language=ENG&Country=US&Region=USA&cat=COS&ser=GTI

$162.50 (C608GTI MKII)

Component Systems
GTi Series
660GTI

SPECIFICATIONS 
  
 General 
Power Handling, RMS 150 Watts 
Power Handling, Peak 600 Watts 
Frequency Response (±3dB) 50Hz - 30kHz 
Sensitivity (2.83V @ 1m) 91dB 
Impedance 4 Ohms 
Mounting Depth 3-1/16" Woofer, 1-5/16" Tweeter 
 
https://www.jbl.com/car/products/product_detail.aspx?prod=660GTI&Language=ENG&Country=GB&Region=EUROPE&cat=COS&ser=GTI
 
$500.00 (660GTI)

Amplifiers
Grand Touring Series
GTO1004

SPECIFICATIONS 
  
Warranty One Year
General 
Power Output 100W RMS x 4 Channels at 4 Ohms 150W RMS x 4 Channels at 2 Ohms
Signal-to-Noise (dBA) 104dBA (reference rated power into 4 ohms)
THD 0.02% (rated power at 4 ohms)
Frequency Response 10Hz - 100kHz (-3dB)
Dimensions (L x W x H) 18-9/16" x 10-3/8" x 2-1/8"
 
https://www.jbl.com/car/products/product_detail.aspx?prod=GTO1004&Language=ENG&Country=GB&Region=EUROPE&cat=AMP&ser=GTS

$170.63 (GTO1004)

Amplifiers
Power Series
PX300.4

SPECIFICATIONS 
 
General 
Power Output 123,5W x 4 into 4 ohms
169W x 4 into 2 ohms
358W x 2 into 4 ohms, bridged
Max Power 600W Peak x 2
Signal-to-Noise Ratio >95dB
Total Harmonic Distortion 0.04%
Frequency Response 10Hz - 45kHz ±1dB
  Built-in variable electronic crossover with selectable slope
  Dynamic Bass Optimization™ (DBO) circuit
  Preamp outputs
  Differential inputs
  Internal-lighting-ready
  Direct-Connect
Dimensions (H x W x D) 312mm x 432mm x 66mm
 
https://www.jbl.com/car/products/product_detail.aspx?prod=PX300.4/230&Language=ENG&Country=GB&Region=EUROPE&cat=AMP&ser=POS

$261.00 (PX300.4)

Those are the 2 best 4 channels I can get on discount.

Thanks in advance for everyone who posts. =)