Last season I logged over 100 on Metron B5's, and perhaps I can offer you some perspective.
The B5 on properly skilled "feet", will crush just about anything in their way,,will hang nice enough on the very slick,[read east coast], are extreemly sweet in ugly snow[s], and will please in powder for a non-specific to powder , ski.
They respond to contemporary technique, and will allow skilled classical techiques to a degree , for the fun of it. So ,,they reward those who know what, how and when, and I'll let you finish the sentence.
Because of their width underfoot, you must be pro-active into a turn so as to dial up appropriate edge angles' as with most "plus" sized skis.
There is no substitute for a demo, and I encourage you to go to a demo site and "rent" for a full, preferably 2 days. Make sure you ski it short enough. Using their tables, if you are near the "figure", go short. A two day demo would allow for that kind of adjustment.
If you are on frontside consistantly hard surfaces, look at the SX and Lt series as they are narrower underfoot and somewhat more "forgiving and accomodating" for that environment, but will not perform quite as well in mixed conditions.
Like anything else, you make the adjustment [possessing the skills] when used outside of their design criteria.
The B5 is a very high quality product, [out] performs to expectation, and will go the distance barring incident. They are worth all the money as long as you are not over buying. Be honest with youself, and choose wisely.
Have fun, and don't take it too seriously,,it's only skiing!