Listsource you can pay per lead or get a subscription. what are you using the data for and what lead types / properties are you looking for?

Bigger Pockets subscription is recommended, It has a lot of learning material.

Real Estate Agents typically have programs like "Cloud CMA" that is connected to their MLS subscriptions.

You need the paid subscription to get the right tools though.  

I have another account where we are using it to manage operations for a website and I'm thinking about getting a pro subscription so that I can have the whole team use it.

That did, if you have an AirDNA subscription, you cab look at the comps underlying the estimate.

I was using spokeo before and it's also good, you can pay by the search so you don't have to buy a monthly subscription or batch/ contact list.

Beyond that I could name a ton of tangible site benefits of subscriptions like all the calculators, discounts with partners like Home Depot, the great reports and webinars with tons of data on current markets and trends or the landlord forms just to name a few. 

Airdna is the best and if you really want to get accurate projections the subscription is worth it!

Hey Julian,I am using Deal Machine to build lists and spik tracing comes with the subscription.