Thanks for the continued kind words guys. The fifth station on the 650 is pretty damn sweet!! .50 BMG loader??? Sweet anyone who owns an Ma Deuce should be throwing a party.
The best case for why the Square Deal Bravo is not an economic option is two fold. Firstly your time is money! The 550 is an extra $57.00 and I can guarantee you the time savings and versatility you will get from it are well worth the difference in price.
Secondly, consider Residual Value. With the 550 one of the benfits is that there is a sizeable secondary market for them. If you have a used 550 in good shape it will sell very quickly as compared with the Squre Deal B, 650, or 1050. This is because is because the 550 sits at a great middle of the road price point, and when in used condition makes the perfect introductory machine.
In additon, the dies from your 550 are standard size and will work with a 650 if you ever choose to upgrade.