I signed up for bitlend.io last night. So far, I really like it. It has a fast and very clean UI. I sent over 3 btc and was notified the second it came in.
Pros:
Clean UI
Very easy and fast to navigate
Easy to submit verification info - They approved my identity in less than 20 mins. CRAZY FAST
Seems very secure and professional
No problems transferring BTC or funding loans
SUPPORT IS AMAZING. They responded to my tickets in less than 10 mins.
The support staff using a system called reamaze which is an amazing piece of support software. That tells me they take this very seriously because it's not cheap.
FAQ has a lot of useful information on it.
Cons:
I'd like to know what happens to my info once I submit it. -
Support ticket submittedI couldn't submit PDFs for verification. -
Support ticket submittedNot a lot of information presented to the lender. I'd like more info around the loans I fund. -
Support ticket submittedI'd like to see the stage the loan is in after it is 100% funded.
- Support ticket submittedThere is an INVEST or BORROW box that keeping popping up every time I click on the dashboard link - ANNOYING! I know they're working on that. -
Support ticket submittedNo loans left to fund. I funded them all

Final thoughts:
For launching last night, these guys nailed it. I really like this site. There is work that needs to be done to streamline it and clean it up a little. I noticed this morning that they already fixed bugs I found. They take my emails seriously and the support staff is amazing. I look forward to using this site. I recommend everyone take a look at it, let me know what you think.