The floor window in a 350 / 355 for a short pilot like myself 5'4" is very difficult. LH hand can barely control collective. Have to move so far forward in seat in hurts after 4 - 6 hours of drill work. Flew the RH drive for a few hundred hours and much much better.
Personally prefer LH longline for some strange reason - 206, 105 and 407.
350 /355 thru the floor gave you little situational awareness when watching drillers and riggers doing the runabouts under you.
One of our 350''s had a collective extension.... helped a lot but still caused discomfort after long days of VR.