Precision at Newberg Chehalem, if you must fly S300, is probably better value/money compared to most Schweizer operators. Another advantage is plenty of instrument approaches/airports nearby. Tim's nice guy, you'd probably fly with Tim most of time.
OTOH, Bristow Academy's premium prices are offset by the 'brand' on your CV. More limitations, higher pace (at least compared to Titusvile, not sure about Louisiana, though), etc.
Precision isn't that busy. It's located at privately owned public airport. It's quite short strip for airplane guys (only been there in heli couple times) but won't matter for S300. Though you'd come and take 'our' pattern in KMMV a lot for autos.
Oh, they're also doing some contract training in S61R and recently some buzzing in EC135 at KMMV. I wish my noise signature in R22 as as nice as the 135.