Analyzed? In which way? The colour of their logo or what exactly do you mean? Also, how do you write a "quick overview" of a 700 item-list?
Lol, i can't determine if the altcoin is good investment by logo

, but analysis of the tech behind them, potential, innovation would help allot.
I guess the most full information can be seen on 'coinmarketcap' site but there is no general overview there. And I guess there are about 30 currencies worth recalling when we speak about alts. So, you can find the information in ANN threads on this forum and some information about each on other sites.
I don't know about any deep analysis of at least 15 currencies. And how can it really be made? Potential is a very uncertain thing.
There may be 30 coins that have some sort of real world value (I'd argue that number is lower), but in terms of trading, there are more than 30 coins that are worthwhile to look at. Any coin with non-negligible volume has potential for the trader to turn a profit from. I'd argue that number is closer to 200 or so.