I have always been a fan of the US Divers (now AquaLung) Impulse 2. Nice wide bore with two purges that make it super easy clearing. You can find them in dive shops and on eBay. I think a benefit to you personally would be the comfo-bite mouth piece it comes with. Soft silicon, but not so soft you'll bite through it, and very comfortable grip. I prefer the solid verse flex tube myself, as it's less strain on the jaw to keep the mouth piece in your mouth. The flex tube causes the mouthpiece to want to be out of your mouth, so there is a constant, albeit very slight, force that you are working against all the time with flex tube models. The flex also shimmies around when you're swimming against a current or rough water, where as the solid tube doesn't have this issue. Anyway I hope this helps!