I agree with previous posters who state that the Premier has acquired a poor reputation mainly because of mishandling.
The aircraft has a well designed swept wing which likes to keep flying - the recommended landing procedure is to approach at Vref and NOT add a few knots for gusts, mum etc. as the aircraft is then liable to float.
Most of the 'incidents' which occurred in early models were due to the approach to a short runway being made too fast, and sometimes coupled with a known problem with the flap or lift dump system. There is nothing wrong with the brakes, particularly those on the 1a which have been modified and are very good, but like most aircraft brakes they are not very effective when the aircraft is still flying..
If problems occur with the flaps, then a flapless approach needs to be made at Vref +20 kts, with the corresponding increase in LDR.
It is perfectly possible to short field land the Premier in fields such as LFTZ with an LDA of c.3800' as long as the runway is dry and the aircraft is serviceable and accurately flown.
IMHO the RA390 is a fine aircraft, if a little short-legged, but can be unforgiving in the above circumstances. If in doubt, head for a long runway....
Level 400