Heart Specialist Vet for Cat – Looking for a reputable one and possibly price estimates?

My sweet cat boy has had the vets mention that he has a heart murmur. I’m not sure what grade it is, I’ve heard conflicting things (we moved here from the US and vets in the US said it was low grade that occurs when he’s stressed) and the vet here said it was possibly 2-3 grade, so I’m not sure just how bad it is. He is NOT coughing thankfully, he has the occasional one but very rare. I’m looking to find a specialist to see just how bad it is, and move forward to find the cause and possible treatment options. I’ve heard vets here are cheaper. What is the best one (heart specialist) on island and if possible, can you give an estimate (if any of you have had to do this) on a FULL examination and evaluation(blood panels, ECG, heart ultrasound, the whole shebang) . Money is no object for my boy, I want him living a long healthy life, he’s only 5 years old. Thank you in advance

by Lopsided-Medium-9195