Specifically for .223 & 300 BLK. Would it be better to buy one for each caliber of the original model or the WFT2 and the trim chambers for both calibers (or does it come with one trim chamber and I'd only need to buy the 2nd one)? Are there any advantages to using the original vs WFT2 for only 2 calibers? I use the Possum Hollow trimmer now for .223 & like it, but have never used a WFT so don't know how they compare. Is one more precise? Faster? Less need to stop & clear swarf? Better/cleaner cut? Thanks!