If you are looking to import quotes into an excel spreadsheet, I haven't found anything else as convenient or extensive. It can take you a while to get up to speed on the data available but it is worth it. The range of data available, for free, is mind boggling.
Here's just a sample of the data available from the Yahoo feed:
|Basic Quote||Fundamentals||Technicals||Estimates||Real-Time (ECN)|
|s||Symbol||j1||Market Capitalization||a2||Average Daily Volume||t8||1yr Target Price||k1||Last Trade (ECN with Time)|
|n||Name||f6||Float Shares||t7||Ticker Trend||e9||EPS Est. Next Quarter||b3||Bid (ECN)|
|p||Previous Close||r5||PEG Ratio||j||52-week Low||e7||EPS Est. Current Yr||b2||Ask (ECN)|
|o||Open||p5||Price/Sales||j5||Change From 52-week Low||e8||EPS Est. Next Year||c6||Change (ECN)|
|h||High||p6||Price/Book||j6||Pct Chg From 52-week Low||r6||Price/EPS Est. Current Yr||w4||Day's Value Change (ECN)|
|g||Low||b4||Book Value||k||52-week High||r7||Price/EPS Est. Next Yr||c8||After Hours Change (ECN)|
|x||Exchange||r||P/E Ratio||k4||Change From 52-week High||j3||Market Cap (ECN)|
|l1||Last Trade (Price Only)||e||Earnings/Share||k5||Pct Chg From 52-week High||r2||P/E (ECN)|
|l||Last Trade (With Time)||j4||EBITDA||m3||50-day Moving Avg||k2||Change & Percent (ECN)|
|d1||Date of Last Trade||s7||Short Ratio||m7||Change From 50-day Moving Avg||v7||Holdings Value (ECN)|
|t1||Time of Last Trade||d||Dividend/Share||m8||Pct Chg From 50-day Moving Avg||g5||Holdings Gain & Percent (ECN)|
|k3||Last Trade Size||y||Dividend Yield||m4||200-day Moving Avg||g6||Holdings Gain (ECN)|
|c1||Change||r1||Dividend Pay Date||m5||Change From 200-day Moving Avg||m2||Day's Range (ECN)|
|p2||Percent Change||q||Ex-Dividend Date||m6||Pct Chg From 200-day Moving Avg||i5||Order Book (ECN)|
|c||Change & Percent|
|v||Volume||Option Quote Additions|
|j||52-week Low||o1||Open interest?|
|k||52-week High||p3||Type of option|
|w||52-week Range||e3||Expiration date|
|b6||Bid Size||n||Name of option|
note, the last trade quote is l1 (lowercase 'L' then the number '1') (that drove me nuts for a while)
here's how it looks in my spreadsheet =RCHGetYahooQuotes(+Z2,"l1")
This is only one small segment of the data, The full excel list of all the data points available can be found here: http://ogres-crypt.com/SMF/Elements/ and it is a truly phenominal amount of data. Yes, some of it is repetitive but if you are looking for data on a security, start here.
There's also an active message board if you have any questions on implementation:
Of course you can get one cell to refer to another, so one can populate quite a bit of data in a spreadsheet by just entering the symbol. Best part is it's all free.
I use the plug-in almost daily and would honestly be lost without it. I suggest you give it a try as well.