I use Multibit Classic and I am satisfied with what offers as well as ease of use.I do not hear much of a positive opinion on MultiBit HD so at the moment I do not plan to switch to a new wallet but I will certainly explore some new options 
You are right, don't use MultiBit HD it's worse. Better to keep using MultiBit Classis, you will regret if you change it.Better always go with blockchain This is whats known as a hybrid wallet meaning the company stores your wallet online but they do not have access to your private keys. However since the wallet is loaded from their servers some trust in the company is still needed.I will Recommend for beginners who are trying out Bitcoin
Yes, blockchain really seems to be the best and most secured wallet, but, they have a close rival which is Xapo wallet. Xapo wallet is also one of the oldest and most secured. Xapo also has a vault where you store your bitcoins, and their vault is the most secured. They also offer a debit card to their users, which will enable them to withdraw their bitcoin anywhere, anytime in the form of cash. Now a days I prefer Xapo.
Blockchain is really a wallet to go with. There are lots of online wallets, but, blockchain seems to be the most preferred wallet used by bitcoiners. They allow us to access our private keys. This may be the reason for many bitcoiners are preferring blockchain. Xapo never allow you to access your private keys.
Even if blockchain seems to be the best and more secured by allowing direct access to our private keys, still many people normally go for coinbase. I do not know any specific advantages we can enjoy using coinbase. Recently they launched debit cards. But coinbase is more popular since it's introduced.