There's a lot of good places around, each to their own with various reviews.
Lately there is also alot of new place coming up with crazy tech 737NG sim trying to attract people but as said abov, it just an MCC course and not a type rating so you wont get that much benefit out of flying one.
After all you might get employed by a company that uses Airbus, so whats a 737 sim good for?
Simtech in Ireland have very good reviews, they are helpful, aftercare is also good, and before you ask they have a basic older 737 sim, noting to realistic, but it does the job.