I just done my METV though the London Embassy. I noticed that they have changed the requirement to 60,000 baht. I showing a balance above this. I had no issues and received the eVisa after 3 days.
I work month/month offshore and have used the 6 month multiple entry visa for the last 6 years. No hassles. Have also had no issues renewing it every 6 month.
Previous to this, I was entering on the 30 day visa extension until I go pulled up at immigration. Since getting the METV, I've had no issues.
You have the potential to be stopped if you come frequently on the visa exempt. I use the 6 month multiple entry tourist now and have had no issues. Depending on what country your from this can be applied for online.