A1200 has several advantages over other models these days:
- onboard IDE compatible with cheap huge laptop drives
- PCMCIA port compatible with cheap CF, cheap network cards, cheap WiFi cards
- large numbers of accelerators or RAM expansions available on the second-hand market
- great expansions made for the clockport (clockport is so cool that manufacturers have made clockports for all other miggys too)
- modern reliable electronic design of the mobo
- cool form factor
- nice AGA chipset
- great pieces of hardware still developped such as Indivision AGA, etc
- modularity for towering, etc
The A1200 is then the modern mainstay of the amiga classics.
Some of these advantages are found in the A600, which is nowaydays more interesting than an A500.
Anyway, i still like my A500 Plus (first amiga) but i can't add easely a network card and it cost me a lot of money to buy it a Viper520CD which is less powerful than my A1230.
My A2000 has so much expensive hardware that it can be considered has my best amiga but i haven't the room for it on my desk for now and is unused.