I would consider the 1.7 converter and also the future T/S converter
The 1.7 is very good - not like the crumby converters of old
ie you could get the 100 and the 1.7 and gain some flexibility
The 100, not that I own one, seems nice to me, small, bright, light and very desirable
currently I regularly use the 1.7 with the 80 for a bit more compression than the 80 gives
S