I actually tend to use both my TM and my FW7 everyday, during the day, still at home all the time, so just with WPA and dry glass pieces or through water pieces... They are the perfect complimentary pair, the FW8 will be very similar to the 7 I think though... It is like glass stem pure convection on demand and ceramic chamber pure conduction on demand, both extremely versatile and effective devices with top-notch vapor quality!
TM bowl size is more adjustable depending on your screens and stems, FW is more fixed with the ceramic chamber, but you can load anywhere from a decent amount to very little (works best if you don't load more than 3/4 full, but it works very well with tiny amounts if you want, just means fewer hits) Both have a full temperature range and very pure materials used plus the same replaceable batteries...