I have received lease offers from Murex and Phoenix. Both are good offers. It seems to come down to which company is more likely to drill and which one is more efficient in getting the oil out. Does anyone have advice or feedback on performance or experience with these two? Murex is established and has producing wells nearby. Phoenix is a relatively new company but seems to be moving aggressively. Both of course say they’re going to drill and are the better choice. 
Whomever you sign the lease with doesnt matter. Take the best offer regarding money and clauses that they will allow you to add and the shortest closing date.
Go with experience.
Lease language and 100% certainty of payment simultaneous with signature are probably the most important elements of your transaction.